, o]k+ z} w 'µ] v - skybrary · helioshore hums best pracce guidance version 1.1 3hums ata...

Health & Usage Monitoring SystemsHeliOffshore Best Practice Guidance

Version 1.1

HeliOffshore HUMS Best Practice Guidance Version 1.1 ore ord

ForewordAbout Health and Usage Monitoring Systems

Health and Usa e Monitorin S ste s HUMS are sensor ased s ste s that

easure the health and er or ance o ission critical co onents in aircra .

he ro ide actiona le in or ation so that aintainers can a e data in or ed decisions.

HUMS are increasin l effecti e in ro idin additional data on e er in technical issues and ith the de elo ent o d anced

no al etection s ste s the accurac and redicta ilit o HUMS continues to i ro e.

his uidance ill e u dated re ularl . ou ha e co ents or su ested a end ents

lease e ail [email protected]

Delivering HeliOffshore’s HUMS Best Practice Guidance from the co-chairs of the HUMS Working Group

n Octo er 1 efforts to e chan e HUMS est ractice eca e lo al a er HeliOffshore e ers

identi ed the sharin o HUMS est ractice as an industr ide sa et riorit .

his uidance re resents ore than a ear o or our industr s to HUMS s ecialists colla oratin to share data olicies and e eriences and to a ree hat

est ractice loo s li e. han ou to the or in rou and those ho re ie ed the uidance. e are con dent that its i le entation o erators lar e and s all

ill a e a difference to sa et and a aila ilit .

Our or ill continue as HUMS and our use o these s ste s continues to e ol e and our industr e ins to e erience the sa et and e cienc ene ts o i le entin these est ractices.

Russell Gould – Director, Global Fleet Support, Bristow

Malcolm Garrington – Manager HUMS Support,

CHC Helicopter

Safety Through Collaboration from HeliOffshore CEO, Gretchen Haskins

On ehal o HeliOffshore e ers ant to than the HUMS or in rou and e er one ho re ie ed the uidance.

HeliOffshore is rin in eo le to ether so that our industr can achie e and sustain e er hi her le els o sa et . he launch o HeliOffshore s HUMS Best Practice Guidance is the result o a hi hl en a ed industr u n o entu ehind those actions that ill a e the reatest difference to sa et .

Peo le in the rontline o our industr ant to use sa et tools to their ull otential and this uidance ill hel the do that. e are no ocused on su ortin o erators to i le ent est ractice our acco an in i le entation uide i es su estions on ho the can achie e this.

his uidance is a start oint on a ourne o colla oration hich ill de ne a clear standard or o erators to ollo .

he HUMS or in rou ill continue its or and to en a e ith sta eholders includin s ste desi ners

anu acturers and the nternational ssociation o Oil Gas Producers. e ill re ie and re ne the uidance

in res onse to sta eholder eed ac so that the a i u sa et ene t is achie ed ro HUMS.

Gretchen Haskins

ou can nd out ore a out HeliOffshore our sa et lan and the or strea s atwww.helioffshore.org

HUMS specialists are encouraged to participate in our online, secure collaboration tool: HeliOffshore Space. This is where industry experts are collaborating to the benefit of everyone at the frontline and those who travel offshore.

2

3HeliOffshore HUMS Best Practice Guidance Version 1.1

. HUMS ata ollection 17 . Unser icea ilit M M S 17 . Pri ar nal sis 17 . o nload and nal sis Matri 17 . Second line HUMS nal sis 18 . HUMS S ecialist Su ort 18

6 Communication nternal o unication 20 ternal o unication 20

7 AAD and Web Portals nterconnecti it 22 S ste Use 22 Sharin n or ation 22 O M nstructions 22

8 System Performance Reports O erator Maintenance ction Su ort 24 Ori inal ui ent Manu acturer 24

O erhaul acilit Su ort e ect rendin e orts 24

Per or ance e orts ontent 24

9 Responsibilities and Process Descriptions

es onsi ilities 26 Process escri tions 27

Foreword

1 Background HeliOffshore HUMS or in Grou 5 c no led e ents 5

2 Document Use ocu ent e ie end ent

and U date Process 7 cron s 7 e nitions 8

3 Scope HUMS ata Monitorin 12

4 Ground Station Software and Data Management

.1 nstallin a ne GSS lication 14 . sta lishin a ne HUMS ata ase 14 . Bac u and rchi in ata 14 . Hard are and So are ontrol 14 . P and a to e lace ent 14 . HUMS GSS hec list 14 . O M H ata rans er and et or in s 14

5 Download and Primary Analysis .1 o nload Periodicit or al Monitorin 16 . o nload Periodicit lose Monitorin 16

10 Training nitial a iliari ation rainin 30 On the o rainin 30 ircra S ste S eci c rainin 30

O M or ui alent ecurrent ontinuation rainin 30

11 Management Oversight or orate O ersi ht 32 Mana e ent O ersi ht 32 ine e el O ersi ht 32

12 Quality Assurance udit Plan 34 ocu entation 34 rainin 34 Su ort Staff 34 ata nal sis n esti ation 34

and o unication lose Monitor 34 GSS and ata Mana e ent 34 ontrol Ser ice ntroduction HUMS 34

e ie and S ste ro e ent

Appendices Appendix 1 o nload Polic Matri a le 36 Appendix 2 HUMS udit Guide 37

Annexes Annex 1 S ail otor Pitch han e 42 Sha Best Practice Annex 2 he deal HUM S ste 44 Annex 3 HUMS P s 48

ontents

4

Section 1 Bac roundHeliOffshore HUMS Best Practice Guidance Version 1.1 Bac round

he use o Health and Usa e Monitorin S ste s HUMS hile not andated re ulation in all

arts o the orld has eco e an offshore standard and is increasin l effecti e in ro idin additional data on e er in technical issues.

5HeliOffshore HUMS Best Practice Guidance Version 1.1 Bac round

Section 1Bac round

Historicall HUMS has een inconsistentl a lied in ter s o its otential ro acti e nature. ith the de elo ent o d anced

no al etection t e s ste s the accurac and redicta le nature o HUMS has i ro ed. O Ms are in estin in this technolo and to a e est use o it o erators need to understand ull the ca a ilit share the ossi le o erational li itations in i lantin these s ste s in an offshore en iron ent and in uence the de elo ent ath to create standardisation and est ractice here er ossi le.

he HeliOffshore HUMS or in rou or ed in u ust 1 . One o its o ecti es as to dri e u lication o Standardised

O eratin Princi les or all helico ter t es ed ith HUMS.

his docu ent ro ides oth a de nition and descri es est ractice to ena le o erators to ana e HUMS related tas s in a a that

ro ides sa et ene t in all o erations.

he docu ent is not a re lace ent or re ulator or uidance docu ents such as

S .1 P etc. ut an additional docu ent that ro ides enhance ent and clari cation on est ractices.

HeliOffshore HUMS Working Group The primary working group included the following HeliOffshore members:

Aerossurance Limitednd ans irector

Babcocka es Strachan ionic e n ineer

Sean e lands HUMS nal st

Bell HelicoptersBrian uc er ssociate echnical ello nte rated Vehicle Health Mana e entoe endelsdor Staff n ineer retired

Bristow Groupussell Gould irector Glo al leet Su ort HeliOffshore HUMS or in Grou eadichard Barne HUMS Mana er Bristo US

Ga an Sil a leet n ineerin S ecialisterr ress ell leet n ineerin S ecialist

Cougara e S uires HUMS d inistrator

CHC HelicopterMalcol Garrin ton Mana er HUMS Su ort HeliOffshore HUMS or in Grou o chairohn a dell Mana er HMS Pro ra

B orn Ha a HUMS n ineer

ERA Helicoptersason la ond HUMS Pro ra Mana er

PHI, Inc.o ert Bouillon irector HSi oucet Su er isor ircra ata

Monitorin S ste s

Weststar Aviation Servicesnd a lor ones li ht ata Mana er

Acknowledgements e ant to ac no led e the an

HeliOffshore e ers includin anu acturers oil co anies su liers

and consultants ho de oted their ti e and effort to hel re ie this docu ent.

lso than ou to re ulator odies ho ha e offered ad ice and su ort.

HeliOffshore HUMS Best Practice Guidance Version 1.1 6

Section 2 ocu ent Use

ocu ent Use

he docu ent is ri en or offshore oil and as o erations ased on a aila le s ste s at the ti e o u lication.

he est ractice a e re ie ed o erators and assessed or suita ilit in their s eci c o erations. Best ractice

uidance a e aried in certain re ions or or s eci c issions usin a ris ased a roach.

7HeliOffshore HUMS Best Practice Guidance Version 1.1 ocu ent Use

Section 2ocu ent use

Document Review, Amendment and Update Process The primary working group included the following HeliOffshore members:Document Owner: HeliOffshore is the docu ent O ner and is res onsi le or

aintainin its currenc . HeliOffshore ill dele ate these duties to an a ro riatel

uali ed erson rou .

Change Procedures: his docu ent and uture chan es and or additions ill e

su i ed to the HeliOffshore HUMS or in Grou . Once a reed a re ised

ersion ill e resented to HeliOffshore or a ro al i le entation and release.

Change Markings: han es ill e identi ed a lac ar ad acent to the chan e e ce t

hen there is a co lete re issue o the docu ent. lanation o the chan e ill

e ro ided ith the re ision re issue.

Acronyms d anced no al etection Sean e lands HUMS nal st

MM ircra Maintenance ManualMO ontinuin ir orthiness Mana e ent Or anisation o ercial ir rans ort

ondition ndicatorS erti cate o elease to Ser iceM li ht ata Mana e ent

H li ht hoursGS Ground Station o uterGSS Ground Station So areHUMS Health and Usa e Monitorin S ste

P e Per or ance ndicatorM Mini u ui ent istMOB Main O eratin BaseO M Ori inal ui ent Manu acturer

H e erti cate HolderVHM Vi ration Health Monitorin



Definitionsnal sis Pri ar he re ie o HUMS data and co arison ith res ect to rede ned threshold le els usin O M H

ro ided round station so are.Secondar nal sis etailed co arison o HUMS data a ainst aircra o the sa e t e to deter ine the statistical

si ni cance. o nload Process o retrie in collected stored HUMS data ro aircra or trans er and rocess on to the GS

to er or anal sis.HUMS authorised ersonnel ndi idual ho ill re ie anal se and certi HUMS data. e endin on re ion it can e re erred to

different titles. icallTransport Canada Region: ircra Maintenance n ineer ionics ircra Maintenance n ineer or Mechanic echnicianFAA Region: ircra Maintenance echnician M ionics licensed P echanicsEASA Region: ine n ineer echnician S icensed B1 B n ineerAsia/Pacific Region: icensed B1. e n ineer e ui alent to P . echnician M ionics

Main O eratin Base MOB ocation o an aircra s er anent te oraril assi ned o eratin ase or dail i ht o erations that has the a ilit o su ortin HUMS do nload and anal sis.

rend Series o t icall t o or ore data oints used to deter ine ro a ation o a series o data oints o er the su se uent i ht hours. Under nor al circu stances and de endin on the ac uisition schedule and i ht ro le atherin data oints a e a a er o inutes or tens o inutes a art. c uisition also de ends on ser icea ilit o instru entation and associated i ration rocessin e ui ent.

or al Monitorin HUMS authorised ersonnel do nload and anal sis in accordance ith a ro riate HUMS rocedures utilisin a lica le aintenance data as directed ro ted the HUMS.

lose Monitorin urin o nload and nal sis e a deter ine that so e trends e re ie ed ore closel to ensure data has een collected and that the trend has not reached an unacce ta le le el. Should a deter ined le el e reached urther aintenance ins ection inter ention a e re uired.Vi ration le el o trends can ar oth u or do n or a ariet o reasons sho n on the ollo in a e .


lose Monitorin e isin rend ste chan e ith unidenti ed cause

he hi hest riorit in close onitorin initiated an indicator e ceedin a set li it. idence o a trend rise or ste chan e near a set li it. Or a ra id u ard trend.

Example trend graph

lose Monitorin e BSus ected nstru entatione i e ssue

icall identi ed as s i e erratic data o er the threshold ith no si n o risin trend in ean alue.O er the su se uent i hts a series o trou leshootin tas s ill li el e i le ented durin hich a eriod o close onitorin ill start in order to re ie the effect o an aintenance inter ention.

Example trend graphs

lose Monitorin e Ste han e caused o onent e lace ent

or Maintenance ction

ollo in a co onent re lace ent e it s eci call desi ned to e onitored a articular accelero eter or not the indicator or a articular dri e train co onent is affected. his can e either an u ard or do n ard ste .

Example trend graph

Note: So e s ste s cater or this in ad ance in the aintenance anual or throu h o erator s eci c

rocedures as a reed ith the HUMS O M H .Other s ste s rel on the s ste eneratin an alert. or these t es a eriod o close onitorin ill ollo

to ensure the trend re ains at a consistent le el. here ossi le ithin the s ste a relearn o the

alert le el ill e i le ented the o erator on the reco endation o the HUMS O M H.


Definitions continued

isin trend

S i e Sca er



Definitions continuedrendin Pro ide roacti e ro nostic data anal sis to identi si ni cant chan es ithin collected data a erns

to acilitate data dri en aintenance actions and o erall continuous i ro e ent o the o erator s Maintenance Pro ra .

ata trendin identi es chan es o er ti e in the air ra e and includes co onents e. . ear o es sha s and rotors . he asis o trend anal sis is to reco nise a chan e in a ern. Se eral a erns can

e distin uished ro a trend re ie includin a radual dri risin trend ste chan e and data s i e.rendin Gradual ri Gradual dri can e caused lon ter ear o a co onent or eddin or se lin in a er

initial installation. rendin isin allin rend risin allin trend is a aster chan e than radual dri . t nor all indicates a de elo in ault in a

co onent. isin allin trends are the ost co on a erns reco nised or action. B deter inin the rate o chan e ithin a trend a ern it is ossi le to redict the ossi ilit o data reachin a threshold li it.

rendin Ste han e Ste chan e is caused aintenance actions sensor cali ration chan es sudden co onent ailures or a chan e in ode o o eration. Ste chan es ithin a trend a ern are easil identi a le and can e re edied a ollo u to re ious aintenance acti ities on the co onent in uestion or a relearn o the threshold in con unction ith the HUMS O M H.

rendin ata S i e data s i e is not usuall related to a ault. here ore e ceedances caused data s i es can nor all e re ected the data eli ination rocess. Multi le or recurrin data s i es a e indicati e o a de ect

and should e in esti ated.


Section 3 Sco e

Sco e

hrou hout this uidance re erence is ade to HUMS olic rocedures and ractices. t is e ected that a ro riate ri en rocedures are ut in lace an o erator.

his docu ent is ocused on the i ration and health onitorin

as ects o HUMS ith no s eci c re erence ade to usa e onitorin .

12HeliOffshore HUMS Best Practice Guidance Version 1.1 Sco e

Section 3Sco e

Data CollectionHUMS indicator s in alert risin or o concern should e trac ed and re ie ed in accordance ith the o erators

rocedures. t is i ortant that data is athered or these indicator s and that

the are re ie ed as o en as ractica le.

Detection Capabilitys art o re ie in data out ut ro

HUMS the nor al data atherin rocess is ca a le o detectin differin situations

o onent re lace ents Mechanical co onent out ith

aintenance li its or tendin to ards ailure

Maintenance inter entions e. . earin reasin rotor alancin etc.

nstru entation

e t icall rel on thresholds set ithin HUMS to ro t HUMS authorised ersonnel hene er action is re uired. hese are nor all set the HUMS O M H ut de endin on the aircra t e relia ilit statistics and aircra histor there a e areas o the dri e train that ha e o eratorre ulator a lied li itations. hese

ould e ore restricti e than the O M H set threshold.

Close Monitorings urther data is collected and

a a ern esta lished it can then e deter ined that a trend ill all

into one o three t e cate ories.

Type A isin rend ste chan e ith unidenti ed cause

Type B Sus ected nstru entation e i e ssue

Type C Ste han e caused o onent e lace ent or

Maintenance ction

HUMS ata Monitorin


Section 4 GSS and ata Mana e ent

Ground Station So are and ata Mana e ent

unda ental ele ent o o eratin and ana in HUMS is a ro ust round station so are and data ana e ent olic .

14HeliOffshore HUMS Best Practice Guidance Version 1.1 Ground Station So are and ata Mana e ent

4.1 Installing a new Ground Stations Software Application

n GSS a lication ust e installed in accordance ith O M H instructions and s ste re uire ents. Unless a reed

ith the O M H o erators o ulti le HUMS should not install ore than one GSS a lication t e in an sin le o eratin s ste en iron ent as it a roduce undesira le results.

s an air orthiness aintenance tool the inte rit o the HUMS data ase is

itall i ortant. HUMS authorised ersonnel rel on the out ut o HUMS data

and the correctl set thresholds as a asis or aircra air orthiness decision a in .

s interaction testin o differin HUM S ste s is not nor all carried out the O M H the continued inte rit o the data ase can there ore not e con r ed.

4.2 Establishing a New HUMS Database

hen se n u a ne HUMS data ase it is re era le to ha e at least three to our ee s o historical data a aila le to

HUMS authorised ersonnel on the sa e data ase not a lica le or ne aircra .

4.3 Backup and Archiving Data ata should e retained or at least t o ears or H hiche er is reater. rchi ed data should e retained on

e ternal stora e edia or re ote ser er. onsideration should e i en to the

location securit ood and re roo n o archi ed aterial.

4.4 Hardware and Software Control Onl authorised ield oada le So are

a e installed on a controlled Ground Station. Ground Stations should e controlled in a si ilar anner to s ecial tool control s ste s and so are chan es should e trac ed.

4.5 PC and Laptop Replacement n line ith olic a P or la to

re lace ent lan should e esta lished to ensure relia ilit . his ill t icall ali n ith the anu acturer s arrant . or i ro ed standardisation use o data

i a in so are is reco ended and the o an su ort is est laced to ad ise.

4.6 HUMS GSS Checklist sta lish a chec list o hat is installed

on each round stations or each HUMS and a rocess or installation docu ented in co an HUMS rocedures.

4.7 OEM/TCH Data Transfer and Network Links

ll HUMS data should e trans i ed to the O M H at re ular inter als and e

onitored to con r success ul trans er. his should e carried out ia a net or

lin . here this is not ossi le a suita le alternati e ethod should e e lo ed.

Section 4Ground Station So are and ata Mana e ent


Section 5 o nload and Pri ar nal sis

o nload and Pri ar nal sis

o nload and Pri ar nal sis is the collection do nload trans er and anal sis o HUMS data at inter als s eci ed o erator rocedures.

o nload and re ie a er each i ht is e to achie in the a i u sa et

ene t ro HUMS.

16HeliOffshore HUMS Best Practice Guidance Version 1.1 o nload and Pri ar nal sis

Analysis of HUMS data at line level must be performed at each download. As a minimum, HUMS authorised personnel will check for items in alert. These items must be actioned and recorded in accordance with applicable maintenance data and operators procedures before the next flight.

Download and review after each flight is key to achieving the maximum safety benefit from HUMS.

A signed record (written or electronic) by HUMS authorised personnel is required for every download and review of data. A copy of this should be retained in the aircraft records.

Download Periodicity ExceptionsOperations with Short Sector Lengths

hen an aircra is o eratin short sector len ths ith ulti le returns to the MOB o erators should assess HUMS data collection ca a ilities.

onsider the ene ts o a do nload at each return to the MOB ersus e tendin the eriod et een do nloads to allo or a ull HUMS data ac uisition set. his can e achie ed rotors runnin

the aircra ro one i ht to another and then do nloadin a er the end o a series o eturn to MOB issions.

he nu er o re uired issions ould e de endent on the ti e ra e in the

ac uisition indo . otal i ht ti e et een do nloads should not e ceed 1 H.

Operations away from MOBhen an aircra is o eratin a a ro

the MOB a re ote round station should e used to allo or an e ui alent ca a ilit here ractica le. here this is not ossi le

the total i ht ti e et een do nloads should not e ceed 1 H.

Unplanned/unexpected Operationsn the e ent o an un lanned shutdo n

di ersion e acuation or li esa in o eration a a ro the MOB the aircra can e ceed the do nload eriodicit li it ro idin the aircra then returns directl to the MOB or a HUMS do nload or a re ote HUMS do nload is carried out.

5.2 Download Periodicity – Close Monitoring Type A Close Monitor

a co onent is su ect to e close onitorin and su cient data has een

athered to ena le a co lete re ie the do nload and anal sis eriodicit ill e on a case case asis in line ith O M

H a ro ed aintenance data. t should ho e er e no less restricti e than on each return to the MOB not e ceedin 1 H .

urin the close onitorin eriod the res ecti e HUMS channel ust e ull ser icea le to ena le data to e

Type B and C Close Monitoror e B and close onitorin total i ht

ti e et een do nloads should e on each return to the MOB not e ceedin 1 H .

Section 5o nload and Pri ar nal sis

5.1 Download Periodicity – Normal Monitoring Operations from Main Operating Base (MOB)

o nload and anal sis should e carried out at e er return to the ain o eratin ase.


5.3 HUMS Data Collection the aircra has not een in the re uired i ht re i e or a su cient eriod o ti e

it is acce ta le to ha e collected a artial HUMS data set. Ho e er a co lete HUMS data set ust e collected ithin a 1 H eriod.

he HUMS should e ca a le o eneratin a arnin that indicates no data has een ac uired on an ara eter or a eriod o

H. a s eci c s ste does not ha e this eature or e ui alent unctionalit the o erator should ha e a rocess to con r the re uired data has een collected.

5.4 Unserviceability/MEL/MDS he o erator should de ne a Mini u

ui ent ist M Mini u e arture Standard M S or e ui alent docu ent.

his should list the HUMS e ui ent that a e te oraril unser icea le and

include associated o eratin conditions li itations or rocedures as a lica le. S ste unser icea ilit and su se uent de er ent o unser icea le channels should

e ased u on the ta le elo and the de er ent eriod or indi idual channels should e trac ed as se arate de ects.

Table 1: MEL/MDS Deferment Table

his ta le relates to non ac uisition o HUMS data and HUM S ste sensor ailures. Both ailure t es ill e lin ed to

a h sical co onent and all co onent ailures se aratel trac ed.

his uidance does not su ersede an

O M H re uire ents.

lication o this ta le also onl relates to i hts e. . Offshore and does not include aintenance chec i hts.

5.5 Primary Analysis Alert Management

n alert should e actioned i ediatel in accordance ith the O M H holders re uire ents ollo in a lica le

aintenance data and recorded.

n a er caution health arnin ill re uire an assess ent o the trend in accordance ith the O M H a ro ed data and aircra s ste s a re uire ins ection e ore urther i ht. he assess ent o the se erit o the threshold

reach o an alert should also include e a ination o associated ara eters to aid ault dia nosis. idence o stead or ra id u ard trend and or ersistent

eneration o a de ect should lead to a detailed in esti ation ein carried out.

technical lo entr ust e raised i the indicator is to e close onitored.

n er lert ith e idence to indicate a si ni cant risin trend or i continued at the sa e rate ould result in a red alert on the ne t i ht should e actioned as a ed lert.

or a ed lert unless the O M H a ro ed aintenance data s eci es other ise no urther i ht shall ta e lace

until an acce ta le res onse is recei ed ro the o erator s HUMS s ecialist. hen

re uested the O M H ill ro ide su ort directl to the o erator s HUMS s ecialist and hen necessar ill contact HUMS authorised ersonnel directl .

or e istin alerts under close onitorin here there is insu cient data or no data

ro the re ious i ht a aintenance chec i ht ill e needed to collect the re uired data set.

5.6 Download and Analysis Matrix atri includin aircra t e ission

t e and custo er re uire ent should e a aila le to dis la the in or ation

to the o erator s ersonnel. his ill aid accurate decision a in . n e a le is sho n in endi 1.


Deferment Periodailure hile lose Monitorin

e de ectH

ailure hilelose Monitorin

e B or de ect1 H

ailure hileunder or al Monitorin

1 H

he HUM S ste and channel that is ein close onitored ust e ull ser icea le to ena le data to e

athered.


5.7 Second Line HUMS Analysis s art o a ualit control rocess a

second line re ie should ta e lace each da and re ie

atest HUMS de ects on GS O en HUMS su ort re uests include O M H co unication data

Maintenance docu ents or correcti e actions

echnical lo or o en HUMS de ects

5.8 HUMS Specialist Support TrendingThe operator should have a process in place to:

onduct dail aircra s eci c trendin a ainst rede ned condition indicators and identi threshold ad isories or

otential aintenance actions ini u 1 da trend . Note: he list o s to

e onitored ill ar de endin on the aircra odel and or o erator

ased on e erience and co unication ith the O M.

Validate accurac o s ste data and line le el trends conduct eet ide trend co arison and e aluate

otential i ediate and lon ter aintenance actions.

oti O Ms H o si ni cant co onent condition indicator trends.

Threshold Managementll rede ned thresholds ill e set

the O M H. hreshold relearnin or ad ust ent can onl e carried out in accordance ith a lica le O M H

aintenance data either detailed in the aircra aintenance anual or

ia technical a ree ent .

elearnin or ad ust ent a e a lica le hen a co onent has een re o ed and reinstalled or re laced.

he rocess or threshold chan e should e carried out usin a ro ed

aintenance data ro the O M H.

usto thresholds i ossi le ith s ste desi n should al a s e set lo er than O M H threshold to ena le enhanced or earlier ailure detection.

Periodic threshold reviews should be performed as follows:

or a alse alert thresholds used to enerate the alert and an related

thresholds should e re assessed in li ht o ne data and results shared

ith the O M.

hresholds ill e re e aluated or relia ilit

or ne HUM s ste or aircra t es this should e carried out on an annual

asis or statistical anal sis. or ature s ste s or aircra t e this

should e carried out at least ienniall e er ears .

ecords are to e e t or at least t o ears or H indicatin the relationshi et een the o erator and O M H

holder to include the rocess and co unication o all threshold re ie s.


s art o a ualit control rocess a second line re ie

should ta e lace each da .


Section 6 o unication

o unication

o unication is at the heart o effecti e i le entation o HeliOffshore s HUMS est ractice.

20HeliOffshore HUMS Best Practice Guidance Version 1.1 o unication

Section 6o unication

Internal Communicationhe o erator should de ne a rocess or action o an arnin s or alerts enerated the HUM S ste utilisin

O M H a lica le aintenance data.

n internal escalation rocess should e esta lished to ro ide suita le trac in

ana e ent and o ersi ht o HUMSrelated issues ithin an or anisation.

sta lishin a second tier o su ort ithin an o erational or anisation to ana e the co unication rocess

and o ersi ht ithin the HUMS ro ra is reco ended. hese

indi iduals a e e erienced HUMS authorised ersonnel ased ithin the ine O eration or constitute a HUMS Su ort tea .

External Communicationhe o erator should ha e a clear

and audita le rocess in lace or all HUMS related co unications to the O M H. deall the O M H ill

ro ide the eans or this st le o co unication ho e er i this is not de ned the o erator should esta lish a

rocess and a ree it ith the O M H.

Both o erator and O M H should ro ide a re ularl u dated list o an oints o contact. his ill t icall

include e ail and hone nu ers.

O erators should esta lish in colla oration ith the O M H an a ro riate res onse ti e or HUMS related ueries. hese should

e consistent ith o erational re uire ents.

ll ersonnel res onsi le or dealin ith and res ondin to HUMS related

issues should ha e access to O M H a ro ed aintenance data.

he entr oint or recei in a ro ed aintenance data should e de ned ithin the o erators HUMS rocedures.

Generall ha in a sin le oint o contact is the ost effecti e a to

ana e the in or ation o et een our or anisation and the O M H. his also allo s or the HUMS tea to

collect and docu ent details to create a no led e ase that can e ene cial or uture anal sis and trou leshootin .

nstructions ro the O M H should e ollo ed the result o hich should e sent ac . his ill either ro t urther instruction or closure o the

co unication.

o nload the HeliOffshore HUMS Best Practice

le entation Guide or ore ad ice on ho to

i le ent this uidance.www.helioffshore.org


Section 7 and e Portals

and e Portals

ccess to Secondar nal sis s ste s is crucial to the success o our HUMS ro ra e.

22HeliOffshore HUMS Best Practice Guidance Version 1.1 and e Portals

Section 7 and

e Portals

InterconnectivityGround station co uters should ha e a er anent net or or internet connection to acilitate re ular data trans er to secondar anal sis s ste

ortals. lternati el a ro ust anual data trans er

rocess should e in lace to ensure re ular data trans er.

System Useuto ated s ste enerated

alerts should e actioned and ac no led ed ro tl .

s ste s should e re ie ed the HUMS s ecialist on a re ular asis

ini u ee l . nal sis o the s ste s should include an in de th re ie o data and co arison ith ri ar

round station s ste s. nal sis o the HUMS data

should include a co arison o the aintenance records to identi an aintenance actions hich could e correlated to the HUMS trend chan e.

Sharing Informationhe O M should e in or ed

o secondar s ste er or ance re ortin

cases here the s ste has detected or ailed to detect an ano al in ad ance. Per or ance re ie s should

e carried out to ensure continued s ste relia ilit .

OEM Instructionshe O M should ro ide

detailed instructions on e Portal use and

a lica le aintenance data or ault isolation de ect recti cation.


Section 8 S ste Per or ance e orts

Shared in or ation

S ste Per or ance e orts

e orts are roduced hen co onents are re o ed ro the aircra and routed to the o erhaul sho or O M H or re air. ollected data is used to alidate discre ancies ound or uide in trou leshootin or

a root cause o re o al. dditionall this t e o in or ation is shared ith the O M H.

24HeliOffshore HUMS Best Practice Guidance Version 1.1 S ste Per or ance e orts

Operator Maintenance Action Support

he o erator should ha e a rocedure in lace to co ile rele ant data on co onents re o ed re aturel to assist in su se uent trou leshootin re air and i ro ed co onent relia ilit .

Original Equipment Manufacturer/Overhaul Facility Support

he o erator should ha e a rocedure in lace to ro ide ti el and rele ant data

to the O M H O erhaul acilit on HUMS related re ature co onent re o als and or ailures to su ort root cause anal sis efforts. Su se uentl the o erator should ensure that the O M O erhaul acilit ro ides a detailed co onent

condition re ort or alidation.

Defect Trending Reportse ect trendin should e resented to

the o erator s Mana e ent tea durin eriodic re ie eetin s. hese re ie s

should include o erational s eci cs o HUMS status in the da to da o eration. n addition current trends are ro ided to

ana ers durin their nor al scheduled eetin s and distri uted at their res ecti e

eld ase location as eed ac to HUMS authorised ersonnel and i ht cre . Presentations a include HUMS data anal sis results or each aircra t e

ein onitored and associated s ste ro the re ious uarter.

Performance Report Content Examples:

alse lert ate Sensor ailure ate nstru entation e ect ate u er o ia nostic e orts ault ases HUMS o onent elia ilit Ground Station So are Ser icea ilit Usa e ceedance e orts e ect rendin

a les o HUMS e Per or ance ndicators can e seen in nne on a e

Section 8S ste Per or ance e orts

25

Section 9 es onsi ilities and Process escri tions

t s i ortant to e clear a out the roles and res onsi ilities or e er one in ol ed in our HUMS ro ra e.

HeliOffshore HUMS Best Practice Guidance Version 1.1 es onsi ilities and Process escri tions

26HeliOffshore HUMS Best Practice Guidance Version 1.1 es onsi ilities and Process escri tions

Section 9es onsi ilities

The table opposite describes how various HUMS duties may be assigned, and how they may overlap.

HUMS Authorised Personnel

HUMSSpecialist

HUMSManager

o nload ata

irst nal sis o HUMS ata

rou leshoot HUM S ste

rou leshoot ircra

otor rac and Balance

eturn to ser ice

Monitor o nloads

Mana e O M H co unication

ecord indin s

Su ort ield fforts

nal se ata

Su est orrecti e ction

Mana e lose Monitor ite s

nter ace ith HUMS echnical e resentati e O M

rendin leet o arisons

e Portals

Monitor rainin Pro cienc

ssist ith rainin

oot ause nal sis

Procedures

ata ase Mana e ent

ie in to other Pro ra s

e ortin

Monitor Sta n e els

in to Sr. Mana e ent

Partici ate in or in Grou s on erences

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

P

S

S

S

S

S

S

S

S

S

P

S

Pri ar

Secondar

Note: hese roles a e co ined ased on o erator si e and co le it .

Table 2: Example of Common Duties Distribution


Section 9Process escri tions

Download Dataollection do nload and trans er

o HUMS data at inter als s eci ed co an rocedure.

First Analysis of HUMS Datae ie o HUMS data at the eld le el ust e er or ed at each do nload.

t a ini u the indi idual er or in the re ie ill chec or ite s in alert.

hese ite s ust e addressed and docu ented e ore the ne t i ht in accordance ith the rele ant aintenance

anuals and co an rocedures.

Troubleshoot HUM Systemhe res onsi ilit to trou leshoot and aintain the ser icea ilit o the s ste .

Troubleshoot Aircrafthe res onsi ilit to initiate aintenance

action on the aircra in relation to indications ori inatin ro the anal sed HUMS data.

Rotor Track and Balancehe res onsi ilit to onitor and tune otor rac and Balance in accordance ith O M li its.

Return to Servicehe res onsi ilit to ensure that all aintenance actions are er or ed and

recorded in accordance ith a ro ed aintenance data ensurin ser icea ilit

o the aircra .

Monitor Downloadsnsure that data ro each acti e aircra as recei ed rocessed and re ie ed in

accordance ith co an rocedures.

Manage OEM/TCH Communicationhe res onsi ilit to ana e and record all

O M H HUMS co unication or ault anal sis or s ste aults.

e lies ro the O M H HUMS Su ort tea s ill e re ie ed and co unicated to HUMS authorised ersonnel at the rele ant o eratin ase.

Record Findingshe res onsi ilit to ensure that all aintenance actions carried out to correct

the HUMS discre anc are docu ented and disse inated to all rele ant arties. his ill enhance the no led e data ase and ena le

ene cial re ortin .

Support Field Effortshe res onsi ilit to res ond to uestions

or ueries re ardin line le el acti ities. his a include dia nostics hard are so are

and s ste unctionalit .

Analyse Datan de th anal sis o HUMS data. o include

additional ondition ndicator and e anded trend ti e ra e re ie as ell as ider

eet aircra t e co arison.

Suggest Corrective ActionPro ide su ested routes o trou leshootin or HUMS authorised ersonnel to ollo .

Manage Close Monitor Itemsssess assi n trac record and

co unicate all ite s in close onitor.

Interface with HUMS Technical Representative and OEM/TCH

t ti es it ill e necessar to inter ace ith tech re s O M H anal sts and

en ineerin staff in order to rin an o en HUMS issue to closure.

Trending/Fleet Comparisondenti differences ithin a eet t e that

a indicate a otential air ra e s eci c de ect. hese ndin s a re uire O M

H in ol e ent and a roader in esti ation could e i le ented. he outco e a result in a re ised ins ection re uenc or chan e in rocedure etc.

AAD and Web Portalshere a aila le secondar anal sis s ste

re ie should e carried out at inter als s eci ed co an rocedure and O M

H reco endations. nal sis should include an in de th re ie o secondar anal sis s ste data and co arison ith

ri ar round station s ste s. t ill also e necessar oth to ensure that all necessar data o s into the e ser ices

ro ided the O M H su ort rou s and to utilise this in or ation to enhance the dia nostic rocess and co unications.

Monitor Training/Competencydenti and de ne trainin re uire ents. oordinate eed ac o HUMS authorised ersonnel co etenc assess ents to

ensure continual ro ra e de elo ent and t or ur ose.


Section 9Process escri tions

Assist with Trainingnsure that course are and trainin aterial is current and accurate. his a include de elo in class aterial

trainin the trainers and ha in a resence in classes i needed.

Root Cause Analysisssist ith detailed in esti ations to

disco er underl in HUM S ste and or aircra related issues. his can re o e the

ro le atic s to s thus a oidin uture undesira le results. he O M H or e air acilit should e liaised ith here re uired.

Proceduressta lish ro ote onitor and i ro e

co an HUMS rocedures. here ossi le this should ali n ith HUMS Best Practice and e consistent across the o erators or anisation.

Database Managementnsure that HUMS data ases are secure

and runnin e cientl . nsure that there is a current ac u stored in a rotected et accessi le location in the case o

co uter ailure.

Tie-In to other ProgramsShare in or ation ained ro the HUMs in order to ro ote continual i ro e ent o o erational and aintenance de art ents

ithin the co an .

Reportingo ilin data that con e s the effecti eness

o HUMS s ste s and co an rocedures. his in or ation can e shared ith ana e ent as ell as distri uted to

eld ase locations as eed ac to HUMS authorised ersonnel and i ht cre s.

Monitor Staffing LevelsMana e the HUMS Su ort sta n to ensure res onsi ilities are carried out in an e cient anner to ro ide an acce ta le le el o assurance that aircra continue to e air orth . s ell as re ie in and reco endin an chan es in le el ased on or load ca acit this can e affected

eet si e utilisation and additional res onsi ilities.

Link to Senior Managementsta lish and aintain a rocess to

ensure senior ana e ent a areness o critical ndin s lin ed to HUMS u co in challen es ne roduct de elo ent ser ices as ell as HUMS acti it and ene ts.

Participate in Working Groups/Conferences

n a e ith O M H o erators and other related entities to ro ide eed ac on HUM S ste i ro e ents and e olutions. his can e throu h or in rou s con erences and s osiu s that rin to ether su ect

a er e erts or continual i ro e ent o HUMS hese o ortunities ena le est

ractice to e shared.


Section 10 rainin

rainin

he o erator should ha e a s ste o trainin that ro ides HUMS authorised and s ecialist ersonnel

ith suita le instruction. ll trainin should e recorded in the e lo ees

er anent trainin records.

30HeliOffshore HUMS Best Practice Guidance Version 1.1 rainin

Section 10rainin should include

Initial/Familiarisation TrainingBased on eet si e and HUMS t es initiala iliarisation trainin should e i en to all

line aintenance e lo ees. t a ini u it should include in de th HUMS rocedures an o er ie o s ste s o erated the co an and eneral data inter retation instruction.

On-the-Job TrainingOn the o trainin is used hen e lo ees transition to an un a iliar s ste and are

aitin or a or al course. rainin should hi hli ht e oints o the rocess. t ust e ad inistered HUMS authorised ersonnel

ho ha e re iousl docu ented trainin and e erience on the s ste .

Aircraft/System Specific Training (OEM or Equivalent)

hen schedulin HUMS trainin the O M H should tailor their HUMS course are or each rou . ourses desi ned to authorise ersonnel should ocus on the s ste co onents round

station usa e aintenance anual resources da to da u ee o the s steaircra trou leshootin and asic anal sis.

he anal st should e offered a si ilar ersion to that o the aircra technician

course ith an added hi her end anal tical ele ent and ad inistrati e unctions.

an o erator s eci c HUMS trainin ro ra is esta lished the anal sts and

trainers should ha e a ended an O MH or e ui alent course. his in or ation

should e de elo ed into course are catered to co le ent the indi idual o eration.

Consideration should be given to additional training for Avionics Technicians and should include:

HUMS inte ration into a or aircra s ste s includin ut not li ited to di ital uses S V MS.

General aintenance ractices includin accelero eter t ent and ountin ca le ter ination do nloada le edia and hard are issues.

Recurrent/Continuation TrainingThis should occur every two years (minimum), and include, but not be limited to:

HUMS rocedures S ste chan es leet additions So are u dates HUMS case histories no n occurrences and issues. d anced inter retation instruction

his a ali n ith other recurrentcontinuation trainin .

hrou h effecti e trainin ou ro ide our e lo ees ith the tools and in or ation

the need to deli er their or sa el and e cientl .


Section 11 Mana e ent O ersi ht

Mana e ent O ersi ht

ffecti e HUMS ro ra s ha e a ro riate le els o accounta ilit or the HUMS rocesses and rocedures.

Section 11Mana e ent O ersi ht

Corporate Oversighthe o erator should ha e a rocess

in lace to rin HUMS Pro ra e er or ance indicators P to the

a ention o Senior Mana e ent re ularl . P s should include ut not e li ited to success ul data ac uisition rates current indicator trends HUMS initiated ro acti e

aintenance actions to o stacles to achie in ro ra o ecti es. Utilisin the in or ation ro ided an a ro riate action lan should

e de elo ed. his lan a include internal and e ternal actions.

Departmental Oversighthe o erator should ha e a HUMS ro ra re resentati e hose

res onsi ilities include the o ersi ht o the rocess o collection and anal sis o HUMS data and an su se uent aintenance actions.

Line Level Oversighthe o erator should ha e an

a ro riate or anisational structure in lace to ensure the HUMS data collection anal sis and aintenance actions re uired at the HUMS authorised ersonnel le el are carried out effecti el .

32HeliOffshore HUMS Best Practice Guidance Version 1.1 Mana e ent O ersi ht


Section 12 ualit ssurance

ualit ssurance

Ha in i le ented est ractice an effecti e ualit assurance lan is essential to test the resilience o the HUMS rocess and to ensure HUMS deli ers the reatest sa et ene t to our or anisation.

34HeliOffshore HUMS Best Practice Guidance Version 1.1 ualit ssurance

Section 12ualit ssurance

Audit Planhe o erator should ha e an audit lan

that ill e i le ented the ualit ssurance tea . his a or art o

the Sa et Mana e ent S ste .

co ined annual HUMS audit o HUMS e art ent and a sa le o eratin ase should e carried out. he annual aintenance audit at each o eratin ase

should also include a HUMS ele ent.

uditin o the O M H su lier should e carried out in line ith o erators e istin

su lier audit lan consideration should e i en to the re uire ents o the HUMS

su ort contract i a lica le .

he o erator a also e su ect to audits e ulator odies usto ers and aircra lessors.

nternal uditor trainin should at least include a asic o er ie rocess o HUMS or that S ste . no led e o re ulator

re uire ents and co an rocedures.

he elo ite s i e uidance or s eci c areas hich should e audited as art o the o erators internal audit lan.

endi contains a su ested audit lan to co er all as ects o HUMS o eration.

Documentationhis audit area should co er all HUMS

related docu entation includin co an olicies and rocedures and O M H data.

Traininghis should co er trainin re uire ents

and records o oth HUMS su ort staff and certi in staff in ol ed in HUMS acti it or oth initial and recurrent trainin .

Support Staffhis should co er the co unication

su ort ca a ilit and resources a aila le to su ort HUMS o eration. ention should also e aid to the le el o liaison et een HUMS authorised ersonnel and other HUMS su ort staff and O M H en a e ent.

Data Analysis, Investigation and Communication

his should co er all areas o data anal sis an in esti ation carried and the co unication rotocol hen de ects are ound and aintenance actions are re uired.

Close Monitore ie o close onitor olic and rocedures and e idence o acti it .

GSS & Data Managementhis section co ers re ie o so are

and data ana e ent and s ste or ac in u and reco erin data.

Control Service Introduction, HUMS Review and System Improvement

his section co ers control o ne s ste s and ho er or ance is onitored and co unicated or s ste i ro e ent.


Appendices

endices

36HeliOffshore HUMS Best Practice Guidance Version 1.1 endices

Aircraft type Aircraft type A

Aircraft type B

Aircraft type C

o nload eriodicit or al onitorin er return to MOB not e ceedin 1 H s.

o nload eriodicit on close onitor er return to MOB

otors runnin do nload ca acit o S o

s a HUMS aintenance chec i ht re uired hen no HUMS data has een collected an ti e durin a 1 H eriod hen not on close onitor

o o o

s a HUMS aintenance chec i ht re uired hen no HUMS data has een collected on a co onent under close onitorin an ti e durin a 1 H eriod

es es es

s a HUMS aintenance chec i ht re uired i no data has een collected on an co onent durin a eriod reater than 1 H

es es es

HUM S ste to e ser icea le or es es es

HUM S ste to e ser icea le or non o o o

HUMS co onent trans osition or ault ndin o o o

Appendicesendi 1

Download Policy Matrix Example


GSS & Data Management Comments Finding Level

s data accessi le to certi in staff hec round station location .

s there a ethod to eri hat the latest re ision a aila le is hec records .oes each round station ha e the latest so are hec round station .oes each aircra ha e its o n round station hen de lo ed

te oraril a a ro ase hec records round station used on recent de lo ent .s all aircra data e t in a eet central re ositor that is accessi le

to the HUMS Su ort tea hec sa le aircra data .s data ro re otel located aircra trans erred dail to

a eet central re ositor hec sa le aircra data .

re there ac u s o the HUMS data hec records .

Download & Primary Analysis

s there a HUMS anual or e ui alent ith a ro riate docu ented olicies and rocedures e erence the anual .

re all HUMs e ui ed aircra ein onitored hec sa le aircra data .s the data do nload and re ie ein carried out at the eriodicit

re uired in the o erator s rocedures hec sa le aircra data .

s the O M H contacted as re uired hec records .

s O M H aintenance data or the HUMS a aila le and used hec accessi ilit o anuals

Appendicesendi

This guide is a suggested approach to auditing a HUMs operator to ensure best operating practices are being applied.

Note: co ined annual HUMS audit o HUMS e art ent and a sa le o eratin ase should

e carried out. n addition the annual aintenance audit at each o eratin ase should also include a HUMS ele ent.

Helioffshore HUMS Audit Guide


Appendicesendi

Helioffshore HUMS Audit Guide continued

Download & Primary Analysis continued Comments Finding Level

s HUMS data assessed alon side other data such as a netic chi article detectors oil de ris hec aintenance records .s there an a ro riate close onitorin olic in lace

hec anual .re close onitor ite s recorded and ulti atel cleared hec records .

re re uests instructions or continuin air orthiness a ro riatel conducted and recorded hec aintenance records .

re ndin s and or carried out recorded hec aintenance records .

s an a ro riate rocedure ollo ed hen no HUMS data is recorded hec records .

Communication

s there ade uate liaison et een the HUMS su ort staff ana e ent line aintenance O M H and the MO on

HUMS hec records discuss .s there an audita le trail o co unication et een the o eratin ase the HUMS su ort staff and the O M hec records .

re sus ected so are u s ein trac ed and re orted hec records .

AAD and Web Portals

re an su le ental so are tools utilised as re uired O MH and or co an olic hec records .


System Performance Reporting Comments Finding Level

s HUM S ste er or ance re ie ed routinel hec records discuss .

s HUMS relia ilit e a ined ithin relia ilit re ie s etc hec records .

re stri re orts re uested hen necessar recei ed and re ie ed hec records .

re i ro e ents ein ade to the HUMS rocess hec records discuss .

Responsibilities

re the duties o the HUMS su ort staff and certi in staff clearl de ned in relation to HUMS hec anual .s there an a ro riate re ortin line or the HUMS su ort staff

hec or ano ra .re all as ects o HUMS su ort a ro riatel co ered

echanical dia nosis HUMS a ionics round stations Validate ersonnel ca a ilit .s the HUMS su ort staff su cient or the eet onitored

hec s resources s. eet discuss .s the or anisation acti el in ol ed in HUMS O erator on erences Meetin s hec records .

Appendicesendi


40AppendicesHeliOffshore HUMS Best Practice Guidance Version 1.1

Training Comments Finding Level

o the HUMS su ort staff and certi in staff ha e the necessar HUMS trainin hec trainin records .

re HUMS related issues ed ac into trainin aterial or HUMS authorised ersonnel hec course aterial .

re HUMS su ort staff recei in re ular recurrent traininde elo ent trainin hec trainin records discuss .

Management Oversight

Control Service Introduction (CSI), HUMS Review and System Improvement

the s ste is under oin a S is the or anisation acti el in ol ed hec records discuss .

Appendicesendi



Annexes

nne es

42AnnexesHeliOffshore HUMS Best Practice Guidance Version 1.1

This document is a type-specific appendix to HeliOffshore’s Global Health and Usage Monitoring Systems (HUMS) Best Practice Guidance.

t contains est ractice that ill ena le o erators to ana e the SGB ail Gear o Bearin ner

nal sis ool related tas s or the ail otor Pitch han e Sha P S

Bearin .

TR PCS Safety Barriers in place

Soft ware Control

Data Collecti on

SGBA Detecti on Capability

Download & Primary Analysis

Second line review

Quality Oversight

S92 TR PCS HUMS ToolEnhanced Detection

Capability

Annexesnne 1

S92 Tail Rotor Pitch Change Shaft

43AnnexesHeliOffshore HUMS Best Practice Guidance Version 1.1

Software control Use the latest SGB GB Bearin ner

nal sis ool as the ri ar HUMS so are or onitorin the itch chan e sha .

O erators should ha e a s ste in lace to et the latest ersion o the HUMS so are.

he o erator should ha e a ana e ent o chan e rocess in lace to issue the so are ersion ro tl . his ould include or al co unication and here re uired trainin to all certi in staff to e a are o the chan es.

Data CollectionUnder nor al circu stances the auto atic data ca ture rate is e er inutes hen the aircra is o eratin at le el a tude o er

S and en ine 1 and tor ue is reater than .

New installation

he aircra is clear or initial i ht hours o o eration. he o erator shall a e t to collect as an data oints on the ail rans o tion ithin the M utili in

a co ination o auto atic and orced HUMS data ca tures.

Ho e er consideration should e ade to ensure data collection across the other co onents is not co ro ised.

the re uired nu er o data oints no inall 11 has not een ca tured ithin the initial hours o o eration

Si ors should e contacted.

Post Alert nsure co liance ith the Si ors MM. hen ad ustin the eset lert ate ensure the date and ti e set is at a oint i ediatel a er the last red ac uisition.

the last data oint is red then the tool ill sho insu cient data in the esult o . he su se uent i ht should ro ide

the re uired one data oint or su cient data assu in the correct i ht re i e

ro le is et.

‘X’ – As aligned with Sikorsky’s approved maintenance data

SGBA Detection Capabilityhe latest SGB al orith is ore sensiti e.

t tar ets i ration characteristics that are uni ue to the Pitch han e Sha earin and uses these to ro ide ad anced arnin .

Download & Primary Analysiss er Helioffshore HUMS Best Practice

Guidance HUMS do nload and anal sis should continue to e conducted at e er return to the ain o eratin ase.

or this articular situation here the SGB ool is ein used ith su cient data the GB Bearin ner nal sis ool should e re ie ed as i a close onitored ite e .

he a i u i ht hour inter al shall not e ceed that detailed ithin the Si ors

MM.

Veri the sensor is assin the sensor data ualit chec ithin Mechanical

ia nostics ccelero eters ail Gear o Bearin and no GB sensor ailures indicated on the B t e re ort under

e orts section .

Veri the ti e and date o the last ac uisition ro the latest i ht and certi the status is satis actor . his in or ation should e e t ith the aircra records.

he aircra ust not e dis atched or i ht i the ti e since last ac uisition

or co ination o the ti e since last accusation and the ne t i ht e ceeds the

a i u i ht hour inter al as detailed ithin the Si ors MM.

the tool has tri ered a eco ended ins ection result action as er Si ors

MM i ediatel .

eset lert ate re er to ata collection Post alert on the le .

Maintenance ate reset should not e carried out unless directed Si ors .

Second line Review GB Bearin ner nal sis should e included as a art o the dail second line HUMS anal sis de ned in the Helioffshore HUMS Best Practice Guidance.

there has een a eset lert ate action carried out since the last second line re ie eri a ro ed aintenance data has een used. here a lica le ensure the eset lert ate is set to a oint i ediatel a er the last red ac uisition.

Quality oversighthis rocess should e included as a art o

the nor al audit ro ra e.

Annexesnne 1

S92 Tail Rotor Pitch Change Shaft continued

44HeliOffshore HUMS Best Practice Guidance Version 1.1 nne es

Annexesnne

he deal HUM S ste is an anne to HeliOffshore s HUMS Best Practice Guidelines. e elo ed a su rou o the HUMS or in

rou it is a su ar o eatures the rou considered to e use ul in a HUM s ste as ell as other eatures that it elt should e

eli inated or odi ed ecause the are unnecessar or urdenso e to users.

he rst three sections o the re ort descri e eatures that the rou elt should e included in odern

HUM s ste s. he ourth section o the re ort turned its a ention to ideas or de elo in a uture HUM s ste ithout hat the

rou called the constraints o current ter inolo architecture or technolo .

1. Preliminary Requirements

1.1. Aircraft Maintenance Manual1.1.1. Must clearl descri e theor o o eration data o and architecture o the s ste .1.1. . Must clearl descri e hat tas s are reco ended the O M to the user at each do nload in order to ro erl utili e HUMS. lso i an art o the HUMS is reco ended the O M to e utili ed at s eci c inter als this ust also e de ned.1.1. . Must clearl de ne On oard S ste aintenance trou leshootin error de nitions sensor locations and contain irin dia ra s and arts catalo s.

1.2. OEM HUMS Manual1. .1. Must clearl de ne each H .1. . . Must clearl de ne hard are re uire ents or the HGS.1. . . Must clearl de ne hen to ut in lose Monitor .1. . . Must clearl de ne hen to contact the O M.1. . . Must clearl de ne ho to e aluate all ossi le alerts that can e enerated HUMS and ro ide instructions or correcti e action.

1.3. Training 1. .1. O M ust ha e a HUMS trainin class a aila le hich ill e credited to the o erator ith the urchase o the HUM S ste .

1. . . O M Must ha e a detailed rainin Manual or HUMS and distri ute to each class.1. . . O M rainin ourse ust re erence the aintenance anual instructions.1. . . nstructors ust e ell uali ed to teach the course.1. . . rain the rainer ust e offered the O M onsite or offsite so that o erators a conduct effecti e internal trainin .1. . . lasses ust e tailored to 1 ircra echnician nal st.

1.4. Support1. .1. On site HUMS su ort ust e a aila le or initial launch o a ne s ste at a ne o eration.1. . . here ust e a HUMS Hotline and su ort rou ith su cient resources to co er lo al ti e ones .

2. HUMS Onboard System

2.1. Components.1.1. ccelero eters tacho eters U s

trac in de ices connectors and ca lin ust e ro ust and ro en to e relia le.

.1. . Main Processor So are loadin is e cient and strai h or ard.

.1. . he so are should e ca a le o su ortin aintenance credits.

2.2. Data Acquisition. .1. he ti e re uired to collect a ull

HUMS dataset should not e ceed 1 inutes total and ideall e less.

. . . he HUMS recordin should start ro here it le off instead o startin ro the e innin each ti e it alls out o the recordin re i e. he idea is that e en ith short i hts e ill et a ull dataset ithout needin dedicated HUMS i hts.

. . . he s ste should ha e an ent u on hich ould o erride the current ac uisition and record a eneral i ration scan.

2.3. Onboard Processing. .1. he total ti e re uired to co lete

the rocess o retrie in the data ro the aircra and loadin into the HGS should not e ceed inutes total ull ie or a dail do nload.

. . . Pro ide a uic oo unction or et een i ht do nloads here the total ti e re uired to retrie e data ro the aircra and ie alerts does not e ceed inutes or a standard i ht se ent.

. . . he on oard s ste ust ha e the ca acit to store a ini u o o retrie a le data hich a s an ulti le i ht sessions. his data ust then e accessi le throu h a data us ia arious ethods o inter ace USB i i thernet etc. hich ust e u rada le ith the e olution o technolo .

. . . he le si e o a standard dail do nload ust e ana ea le or data trans er and stora e.

The Ideal HUM System


Annexesnne

2.4. Rotor Track and Balance. .1. Must e a le to accuratel easure

B readin s.. . . ilit to ie current B le els

on oard is re erred.. . . rac ata ust e auto aticall

ca tured hen B ac uisitions are collected i ed .

. . . Manual and uto atic ac uisition odes ust oth e a aila le.

2.5. Desired Functions. .1. Must e desi ned to ca ture an

O M re uired i e chec s ithout installin additional e ui ent onto the aircra .

3. HUMS Ground Station

n recent ears there has een co etition in HUMS de elo ent that has resulted in di ersit in unctionalit as ell as in architecture. So e o the ore co on setu s are entioned elo .

3.1. Architecture.1.1. O M Hosted e Ser ice..1.1.1. Must ha e real ti e do nload

and re ie ca a ilities ith no dela to the rocess.

.1.1. . Must ha e ro ust s eed connecti it and accessi ilit so that an a era e internet connection is su cient in order to ull utili e the ser ice.

.1.1. . Must ha e a ac u s ste in lace so that o erations are not co ro ised in case o an outa e or co lication.

.1.1. . ata ri ac ust e ell de ned and sharin ould onl e allo ed ith the e ress ri en consent o the o erator.

.1. . e Based.

.1. .1. ach HUM S ste should offer a so are o tion so that the HUMS Ground Station can e accessed ro a asic internet connection. no Hosted e ser ice is a aila le the o erator ust ha e an o tion to inte rate HUMS into their indi idual net or s and . . in rastructure.

.1. . H rid.

.1. .1. h rid s ste a ha e a local installation o the HGS so are ut ha e the a ilit to connect to oth a local data ase and a net or ed data ase. n cases o h rid s ste s the should e a le to ush an ne local data to the net or ed data ase once an internet connection is esta lished.

.1. . ocal nstallation.

.1. .1. here ust e an o tion or local or h rid installations o the HGS in cases o o eratin in re ote locations. ocal installations o the HGS ust ha e the ca a ilit to e ort and i ort les. his ill ena le the o erator to ro ide data or su ort and also aintain a central data ase i so desired.

3.2. Security. .1. HGS er or s anti irus scannin o

re o a le stora e de ices. . . . Pass ord rotected indi idual user

lo in ith con ura le er issions.

. . . User actions should e lo ed the HGS. screen ithin the HGS ould then e a aila le to identi hich user too hat action.

3.3. Database. .1. o ust data ase ca a le o

storin se eral onths o data or ulti le aircra .

. . . User on ura le ur e unction that could archi e Para etric data ut ee data or su stantial trendin ca a ilities.

3.4. Additional Software. .1. HUMS related so are outside o

the ain HGS that is needed to ull onitor an aircra ill e a oided hene er ossi le. nstead an additional unctionalit that is needed ust e incor orated into the ain HGS.

3.5. Thresholds. .1. n initial threshold set ust

e ro ided ith each s ste that ill co er an O M li its as ell as ite s descri ed in P . S Periods should last no ore than one ear ith threshold re ne ent occurrin at least the end o this eriod ro ided that at least aircra ith each is collected.

. . . herea er threshold re ie s should occur at least e er ears.

The Ideal HUM Sytem continued


Annexesnne

. . . O M s ust e rece ti e to re orts ro o erators that detail HUMS onitored co onent re o als in order to su ort threshold o ti i ation efforts.

. . . earned thresholds ith a ed in a .

. . . ndi iduall ad usta le O M thresholds ith ro er authori ation .

. . . ilit to set internal ad isor thresholds that are elo O M le els.

3.6. Alarms. .1. Multi le el alar s.. . . Standard color codin or each

alert se erit le el e el nor al Green e el 1 ad isor Blue o tional e el caution er e el arnin ed .

. . . ithin an H indication the O M ust ro ide the a ilit to drill do n urther into the data. ndi idual s ust e accessi le de ned and a aila le or anal sis in order to identi and isolate a ault at the su co onent le el.

. . . he HGS ust ro ide a o ata t e o arnin hen data has not een collected ro a articular sensor or co onent or a set a ount o ti e. his alar ust also e con ura le the O erator to suit their indi idual ti e re erence or as standards chan e .

. . . elia le rend etection should e incor orated into each HUMS Ground Station ith or ithout a re istered alert .

3.7. Rotor Track and Balance. .1. Must ro ide solutions that resol e

B le els to ithin acce ta le O M li its and e acco lished in a reasona le nu er o runs.

. . . Should offer a unction or B ad ust ents et een i hts. his eature ould e li ited to s all ad ust ents so as to not re uire a dedicated aintenance i ht.

. . . Must store ei ht lin ta se n s and consider O M li its hen i in solutions.

. . . Must store ei ht lin ta ad ust ents ade et een each o eration so that se n s can e ie ed i ht i ht.

. . . Must dis la redicted i e le els o the su ested solution e ore it is a lied.

. . . Must e a le to ie har onics o the otor S ste s 1 er er etc. .

. . . Must ha e the a ilit to trend B data o er ti e ith a ie o the threshold li it ceilin .

3.8. Desired Functions. .1. leet status screen that a lies one

o the our different alert status colors to each tail nu er or uic identi cation o sus ect aircra .

. . . Sin le a e aircra status screen that clearl identi es all o er li it conditions or the selected aircra .

. . . Maintenance Manual e erences isi le in HGS ith each e ceedance.

. . . Should include so e M ara eters or associatin alerts ith i ht ara eters.

. . . HGS ust ro ide a eans to uanti the nu er o alar s at each le el or each co onent and allo or re ortin .

. . . ilit to enter Maintenance O erla notes isi le oth in date ti e and i ht hours.

. . . ero tolerance or o solete o eratin s ste s. HGS ust e u raded to current OS the O M e ore older s ste s eco e unsu orted.

. . . leet rend o arison ca a ilit or all co onents and B.

. . . ata ust e a aila le to anal e in oth the i e and re uenc do ains.

4. Next Generation items to develop

4.1. Onboard System.1.1. Sin le oint do nload location or

oth HUMS and M data. he location a aila le to e tract oth HUMS and M is the re uested chan e the should re ain as t o se arate les.

.1. . rash rotected HUMS data strea .

.1. . he HUMS data recordin schedule should e selecta le as to rioriti e the order o the data ca tured on a articular co onent. his ould allo or a uic data collection on an co onent durin a i ht no a er its order in the de ault recordin se uence.

.1. . he HUM S ste ill identi ite s in lose Monitor and ite s that ha e not collected data the lon est and rioriti e the in the recordin schedule.



Annexesnne

4.2. Ground Station. .1. H erlin s to aintenance.

docu entation directl ro the HGS.

. . . reate a ash oard unction that is custo i a le the o erator.

. . . e identi ed Glo al leet trendin ca a ilit or all co onents and B.

. . . unction that allo s the user to ie all s and ho lon it has een since data as collected or each o the .

4.3. Rotor Track and Balance. .1. reco ended B solutions are

a lied and readin s stra ar ro hat as redicted the s ste should detect this and su est a aintenance action.

. . . he a ilit to offer solutions that re o e ei ht ro an alread ei hted lade instead o addin ei ht to the o osite lade.

. . . n o erla o lades dis la ed on the Ground Station Polar harts ith lade 1 at 1 O cloc . his ould ro ide a isual re erence here ad ust ents need to e a lied in relation to the actual lade osition.

4.4. Data. .1. e elo a s ste hich all

recorded HUMS alerts to include On oard s ste e ents can e e orted ro an O M s HGS into a co on or at re era l cel co ati le to su ort re ortin and P initiati es.


4.5. Maintenance Data Exchange . .1. e elo a Maintenance ata

chan e so that O M s O erators and e air acilities can e er identi co onent re lace ents and there associate teardo n re orts ith HUMS data in an effort to continuall onitor the effecti eness o current threshold se n s.


Number KPIs Denominator

1 ed lerts l in Hoursed lar s l in Hoursalse ed lar s l in Hours

er lerts l in Hourser lar s l in Hours

alse er lar s l in Hourslose Monitorin nitiated otal l in Hourslose Monitorin nitiated e l in Hourslose Monitorin nitiated e B l in Hours

1 lose Monitorin nitiated e l in Hours11 ia nostic Su ort S ste e uests aised l in Hours1 HUMS U ailures l in Hours1 Sensor a le onnector ailures l in Hours1 Unscheduled han es o Monitored Mechanical o onents ith HUMS ndication l in Hours1 HUMS e erred e ects l in Hours1 o nload a ture ate Percenta e o i hts

Annexesnne

HUMS Key Performance Indicators

his anne to HeliOffshore s HUMS Best Practice Guidelines ro ides a ra e or o e er or ance indicators P s to assess the effecti eness o in ser ice Health and Usa e Monitorin S ste s.

he docu ent hich has een de elo ed a su rou o HeliOffshore s HUMS or in

rou i es o erators a ro osed ra e or or assessin the er or ance o s ste s. he list o 1 P s includes different le els o alert

and alar as ell as alse alar s close onitorin initiated e ents ailures dia nostic and su ort

s ste re uests and HUMS de erred de ects.

he HUMS P docu ent is intended to la the round or or o erators to e a le to share and ench ar HUMS data.

Notes Alerts and Alarms based on EASA CS-29.1465 terminology

lerts re uire anal sis onl lar s re uire on aircra aintenance action e cludin sensors B ed er U er and lo er ediu thresholds t d or each HUMS rac recurrin lar lert as a sin le occurrence. ircra co onent chan es due to HUMS ulti le co onent chan es at one ti e 1 co onent chan e uto ation o data atherin and the a ilit to e ort in a co on or at ould e o use.

his uidance ill e u dated re ularl . ou ha e co ents or

su ested a end ents lease e ail

[email protected]

ou can nd out ore a out HeliOffshore our sa et lan and the or strea s at www.helioffshore.org

HUMS specialists are encouraged to participate in our online, secure collaboration tool: HeliOffshore Space.


, o]k+ z} w 'µ] v - skybrary · helioshore hums best pracce guidance version 1.1 3hums ata...

Documents