operational landing distances - ukfsc meetings/specialist subject/intl... · 3 performance 4...

Operational Landing DistancesImplementing TALPA ARC

Winter OperationsConference 2011Operational Landing Distances

Presented byLars KORNSTAEDT / Performance Expert, Airbus Flight Operations Support

Winter Operations Conference – Montreal October 5-6, 2011

© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document.

Contents

May 2011Airbus Rolls Out the Operational Landing Distances

Introduction to FAA TALPA ARC1

Runway Assessment Matrix2

Performance3

Implementation by Airbus4

Conclusion5


FAA TALPA ARC

Slide 321-24 March 2011Airbus Rolls Out the Operational Landing Distances

May 2011


TALPA ARC Concepts


Page 4


• Attempt to maintain runways “bare and dry”• Make observations

• As accurately as possible• As frequently as required

• Report• Runway Codes by thirds of runway length• Contamination from 10%, then in 25% steps• PiReps• No measured friction values (downgrade only)

• Close runway• One report of “Nil” condition• Two consecutive reports of “Poor” condition

Slide 5

Rules for Airports



• Publish Operational Landing Distances• “Minimum” Compliance with new principles

• Cover all 6 friction levels• Accountability for

• Temperature effect• Runway slope effect• Approach speed increment effect

• Rule to be retroactive


Rules for Manufacturers


Rules for Operators - Dispatch

Existing dispatch requirements

• Dry runway RLD dry = 1.67 ALD dry• Wet RLD wet = 1.92 ALD dry• Conta max of RLD wet

RLD conta = 1.15 ALD conta



Rules for Operators – in-Flight

• Systematic Landing Performance computation in approach

• Exemptions

• Dispatch to same dry runway under same conditions

• Dispatch to same wet grooved runway under same conditions

• 15% Safety Margin

1.15 x OLD = Factored OLD (FOLD) ≤ LDA


• Except in case of in flight failures or emergencies wet grooved


Rules for Operators - Use of Automation

• Automatic Landing• Increments to airborne distance as required


• Automatic Braking• If FOLD manual ≤ LDA

• And if OLD a/brk ≤ LDAthen FOLD a/brk > LDA allowed


Contents




Performance3


Conclusion5


Purpose of Runway Condition Reporting



Contaminant Type and Depth



Friction Measurement



Pilot Braking Action Report



FAA TALPA ARC – Runway Assessment Matrix


Code

2

Runway Contaminant

Greater than 1/8” of:•Water•Slush

Mu (µ)

~29-21µ

Deceleration and DirectionalControl Observation

Brake deceleration andcontrollability is between

Medium and Poor.Potential for hydroplaning

exists.

PiRep

Mediumto

PoorDOWNGRADE

ONLY


•Always start assessment with contaminant type anddepth

•Use additional information to• Degrade to lower friction code• Never upgrade

•Careful with friction reports• May be optimistic on fluid contaminants

•Do not hesitate to request additional informationfrom ATC


Procedure


Examples


Compact SnowBraking Action Medium

Wet in Heavy RainStorm Cells above Airport

Dry Snow over Ice,Braking Action Medium

Compact SnowOAT 1ºC Dewpoint 1ºC


Contents




Performance3


Conclusion5


Definition of Operational Landing Distance

• Realistic airborne part

• 6 braking performance levels• Labelled by Reported Braking Action (RBA)• Good, Medium, Poor and intermediates• Matrix becomes compulsory point of entry


• All relevant parameters considered• Pressure altitude• Planned approach speed• Outside temperature and wind• Runway slope• Reverse thrust use


6 friction levels


0.1

0.2

0.3

0.4

0.5

0.6

20m/s 40m/s 60m/s 80m/s 100m/s


Landing Distance Definitions


50ft

TouchdownVTD

ThresholdVAPP

Airborne Distance

µBSpray ImpingementDrag Aquaplaning

Displacement Drag

• ALD – Actual Landing Distance• RLD – Required Landing Distance (Dispatch) = ALD x FDISPATCH

• OLD – Operational Landing Distance• FOLD – Factored Operational Landing Distance = OLD x 1.15

Ground DistanceFull Stop


Landing Distances: Legacy vs. TALPA ARC


Air GroundMargin

ALD

OLD FOLD

DRYDRY

WETGOOD

COMPACTED SNOWGOOD TO MEDIUM

SLUSHMEDIUM TO POOR

STANDING WATERMEDIUM TO POOR

ICEPOOR

500m 1000m 1500m 2000m 2500m 3000m

BOTH BASED ON MAX BRAKING FROM TOUCHDOWN

LOOSE SNOWMEDIUM

NO CURRENT STANDARD

RLD


A320 in Tegucigalpa / Honduras MHTG/TGU RWY 02

LDA 5410ft / 1649m

Elevation 3287ft

CONF FULL / VREF+5 / no wind / OAT 20ºC

LW

Dry 64.5t

Wet 59.9t

Standing Water 53.8t


Limited by MLW / Dispatch

OLD FOLD

Dry 1330m 1520m (no rev)

Good 1600m 1830m (all rev)

Med to Poor 1910m 2200m (all rev)


Contents




Performance3


Conclusion5


Rulemaking Update



21-24 March 201117th Flight Safety Conference

Airbus Implementation Schedule

May 2011

Page 26

Airbus Rolls Out the Operational Landing Distances


• For all Airbus aircraft• At least “Minimum Compliance” with new principles

• Cover all 6 friction levels• Accountability for

• Temperature effect• Runway slope effect• Approach speed increment effect

• All Performance data sources• Flight Ops Engineer Software• Flight Manual• Operational Documentation• Electronic Flight Bag• Training Material

Operational Landing Distances

OLD Implementation by Airbus


Operational Documentation - QRH



EFB Landing Application



Conclusion


• Airbus adopts TALPA ARC standard for in-flight landingperformance

• Realistic computation basis for all winter runway conditions

• In current environment, pilot must compensate for non yetcompliant Runway Condition Reporting

• Major safety improvement requires



© AIRBUS S.A.S. All rights reserved. Confidential and proprietary document. This document and all information contained herein is the sole property of AIRBUS S.A.S. No intellectual property rights are granted by thedelivery of this document or the disclosure of its content. This document shall not be reproduced or disclosed to a third party without the express written consent of AIRBUS S.A.S. This document and its content shall not beused for any purpose other than that for which it is supplied. The statements made herein do not constitute an offer. They are based on the mentioned assumptions and are expressed in good faith. Where the supportinggrounds for these statements are not shown, AIRBUS S.A.S. will be pleased to explain the basis thereof.AIRBUS, its logo, A300, A310, A318, A319, A320, A321, A330, A340, A350, A380, A400M are registered trademarks.

operational landing distances - ukfsc meetings/specialist subject/intl... · 3 performance 4...

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