Aircraft Maintenance
Preventative
Corrective
Scheduled
Condition Based
Servicing
AF/BF/TA
Undertaken at predetermined intervals to keep AC, products, parts and appliances in a serviceable condition.
Maintenance Organisations
Maintenance Levels
Forward
Determine the condition of an Air System or equipment after or before a period of use
Minimise amount of corrective maint.
Approved Maintenance Organisation - Need to go through MAOS process (approved by MAA), MOE signed by Accountable Manager (Maintenance)
May be retained as individual tasks, allowing completion as operation dictate.
May be grouped periodically and allocated to the appropriate level of maint.
Depth
Topic 5A1
Primary
Primary*
Initiated as a result of knowledge of the condition of an item which is gained from routine or continuous monitoring
Minor
Military Maintenance Organisation - Don't need specific MAA approval
Minor*
Major
Both need to be MRP Pt 145 compliant, 4800 series
MAM-P Chap 4.1
Forward
Forward
Depth
OOPs
SMRs
High frequency task
Day to day running
Pro-active
Scheduled
Approved with Class and Rating system, eg work on engines or components etc
Anticipation
Deferment
Specialist usually in-depth
General Info
The TAA and DT wil set out the determined intervals
Intended to reduce probability of failure or the degradation of the functioning of an item
Carried out at predetermined intervals or according to prescribed criteria
Inspect and Repair as Necessary (IRAN)
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Short-term
Long-term
Derferment
Concession
ADF - No limitations of further flight
Lim - Limitations on further flight
F704D
Can be deferred by Level H, as prescribed by TI, unless directed by TAA or Mil CAM
Need to be responsible for maintenance activity they've defered
Upper lifing limit isn't exceeded
May incur penalty preventative maintenance
TAA approved variations
Survival Equipment & Aircrew Equipment Assemblies can only be authed by level K holder
Maintenance During Abnormal Usage
Faults which have been assessed by the appropriate DT as uneconomical
Laid down by the TAA in thE TI- RA 5401
Mil CAM should consult with the TAA in order to determine appropriate mitigation activity for subsequent inclusion in the AMP - RA 4961
Recorded on the Air System or component ERC
Maintenace can be anticipated (bought forward) by any amount by any individial, unless stated by TAA, Mil CAM, DDH or CAE
Ops in saline environment, including working inland within so many miles of the coast.
Ops in high humidity
Ops in desert or dusty environments
Cold and hot weather ops
AC in storage according to JAP 100V-21
Lifing
Definitions
Failure mode: Process that leads to the ultimate failure of a component
Critical Failure Mode: Failure mode that causes a failure likely to result in the loss of an Air System cornered, loss of airworthiness or likely to endanger the life of any persons concerned with its operation or maintenance
Contingency Maintenance (CTY)
Short-term availability benefits with greater risks
Will require ODH risk management, additionally air system and equipment expedient repair procedures may be required.
In op or combat conditions ODH may decide to implement.
Stopping certain maintenance activities
Decreasing the frequency of scheduled maintenance activities
Critical Components: A significant item that has a critical failure mode or would cost too much to let fail
Promulgation
Component Life Registers:
Maintenance
Component Register List
Requirements will be identified in the AC TI - MAM-P Chap 4.1
Technical and Administrative actions to retain an item in, or restore it to, a state where it can perform its intended function
5A1
Engineering Record Cards
Published in 5A1
Types of Lifing
Provisional
Fatigue
Explosive
Inspecting
Textile
Reconditioning
Testing
Scrap
Servicing
Bay Maintenance
Repair
Rebuild
Rectification
Loss of an ERC must be reported to the Level J who is the quarantine the component, and report to the TAA and the Mil CAM.
Life consumption is recorded on F700, as well as ERC.
If the ERC can’t be found the TAA will decide whether to issue a new one or dispose of the component