AIRCRAFT HANDLING Part 1 Maintenance. Policy & Objectives The RAF’s maintenance policy is based on...

AIRCRAFT HANDLING

Part 1

Maintenance

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 . . . .



(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




Is regular maintenance to –

Keep the aircraft in a sound overall condition.

Minimise random faults.

Minimise the amount of routine day-to-dayattention needed.




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.




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




is carried out as and when a fault occurs.

It is not scheduled or planned for, as the faults can occur at random.




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.



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?



Preventative Maintenance

Phased Maintenance

Check UnderstandingServicing, scheduled maintenance, condition-based maintenance and

out-of-phase maintenance are all types of:


Preventative 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


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:




Modification

Check UnderstandingThe use of NDT and SOAP

are elements of what?





Check UnderstandingScheduled or condition-based maintenance which is needed at intervals that do not fit the maintenance cycle are called what?



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

AIRCRAFT HANDLING

End of Presentation

AIRCRAFT HANDLING Part 1 Maintenance. Policy & Objectives The RAF’s maintenance policy is based on...

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