aircraft handling part 1 maintenance. policy & objectives the raf’s maintenance policy is...
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Policy & Objectives
The RAF’s maintenance policy is based on a finely judged balance,
of preventative and corrective maintenance.
policyP Creventative orrective
Policy & ObjectivesA policy aimed too much at
preventing breakdowns (over maintenance)would keep the aircraft in the hangar
most of the time.
So the objectives of the RAF’s maintenance organisation are in 2 main categories:
‘maintenance’ and ‘operational’.
Policy & ObjectivesOperational Objectives:
To generate the aircraft & equipment to counter surprise attack.
To support intensive flying over a sustained period in NBC or other hostile environments.
To generate aircraft and equipment required for NATO & national commitments.
To satisfy such contingency plans as may be ordered by a higher authority.
The efficient provision of serviceable aircraft and equipment needed for peace time tasks.
Policy & ObjectivesMaintenance Objectives:
Minimise costs (manpower & resources)
Minimise faults that would be hazardous to an aircraft
or affect it’s operational capabilities, or would require expensive repair.
Find ever-better ways of improving reliability and maintainability.
Types of Maintenance
Let’s examine types of maintenance utilised by the RAF:
The aim of Preventive Maintenance is to reduce the probability of failures,
and ensure that performance of aircraft and equipment is maintained.
It attempts to stop faults occurring.
Preventative MaintenancePreventive Maintenance
covers four main headings –
Servicing
Scheduled Maintenance
Condition-based Maintenance
Out-of-Phase Maintenance
Let’s look at each one of them . . . .
Preventative MaintenancePreventive Maintenance
covers four main headings –
(or ‘flight servicing’ when applied to aircraft) is the maintenance needed
after a period of use,
e.g. a flight,
plus preparation for the next period of use.
Servicing
Preventative MaintenancePreventive Maintenance
covers four main headings –
Scheduled Maintenance
Is regular maintenance to –
Keep the aircraft in a sound overall condition.
Minimise random faults.
Minimise the amount of routine day-to-dayattention needed.
Preventative MaintenancePreventive Maintenance
covers four main headings –
Condition-based Maintenance
Some aircraft parts are continuously monitored using non-destructive testing (NDT)
e.g. X-rays or Spectrum Oil Analyzed Particles techniques
(SOAP)
until a condition that needs attention is revealed.
Preventative MaintenancePreventive Maintenance
covers four main headings –
Out-of-Phase Maintenance
Is scheduled or condition-based maintenance
that does not fit the overall
maintenance cycle.
Types of MaintenanceAs well as Preventive Maintenance
there are three other area of maintenancewe must look at –
Corrective Maintenance
Contingency Maintenance
Modifications
Types of MaintenanceAs well as Preventive Maintenance
there are three other area of maintenancewe must look at –
Corrective Maintenance
is carried out as and when a fault occurs.
It is not scheduled or planned for, as the faults can occur at random.
Types of MaintenanceAs well as Preventive Maintenance
there are three other area of maintenancewe must look at –
Contingency Maintenance
In operational theatres it may be necessary to relax maintenance standards,
suspending scheduled and condition-based maintenance
in favour of relying on corrective maintenancewhich varies between aircraft.
Types of MaintenanceAs well as Preventive Maintenance
there are three other area of maintenancewe must look at –
Modifications
are made to remedy any design faults that come to light,
or to incorporate new technology designed to
improve performance or safety.
Maintenance RecordsEvery aircraft has an
Aircraft Maintenance Data Log:
An MOD Form 700
The F700 is actually a series of forms;
MOD Form 701 fuel and oil types, tyre pressures.
MOD Form 703 onboard software log.
MOD Form 705 flight servicing & fuel certificate.
MOD Form 725 flying log & fatigue data sheet.
MOD Form 725A air-to-air in flight refuelling.
Maintenance RecordsThe F700 details are also recorded on the
Maintenance Data System (MDS). concentrating on 6 main aspect of data –
Faults – Defects – ModificationsManpower Utilisations
Task AchievementTechnical Costs & Logistics
These are all available to RAF Stations, Groups
and Commands via the MOD Intranet or disk.
This enables performance monitoring and life span predictions for aircraft.
Check UnderstandingThe RAF’s maintenance policy is based on
a finely judged balance of measures, they are known as:
Preventative and Corrective
Operational and Corrective
Corrective and Permanent
Preventative and Operational
Check UnderstandingA policy of over-maintenance would:
Generate the aircraft to counter a surprise attack.
Ensure that aircraft were never in the hangar.
Ensure that the aircraft were always serviceable.
Keep the aircraft in the hangar most of the time.
Check UnderstandingWhat is maintenance aimed to reduce the
probability of failures, restore levels of reliability,and ensure that time and use do not affect
aircraft performance called?
Scheduled Maintenance
Corrective Maintenance
Preventative Maintenance
Phased Maintenance
Check UnderstandingServicing, scheduled maintenance, condition-based maintenance and
out-of-phase maintenance are all types of:
Contingency Maintenance
Preventative Maintenance
Corrective Maintenance
Operational Maintenance
Check UnderstandingMaintenance performed after aircraft use,
and in preparation for the next flight, is called what?
Out-of Phase Maintenance
Conditioned Maintenance
Flight Servicing
Scheduled Maintenance
Check UnderstandingKeeping an aircraft in sound overall condition,minimising random faults and the amount of
routine day-to-day attention needed are all aims of:
Scheduled Maintenance
Contingency Maintenance
Condition-based Maintenance
Modification
Check UnderstandingThe use of NDT and SOAP
are elements of what?
Contingency Maintenance
Condition-based Maintenance
Corrective Maintenance
Out-of-Phase Maintenance
Check UnderstandingScheduled or condition-based maintenance which is needed at intervals that do not fit the maintenance cycle are called what?
Condition-based Maintenance
Contingency Maintenance
Out-of Phase Maintenance
Modifications
Check UnderstandingWhat is the
Aircraft Maintenance Data Form called?
MOD Form 7500
MOD Form 7000
MOD Form 750
MOD Form 700