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The structure and format of these maintenance recommendations may be re-written by the owner or the MCAR-M Subpart G approved organisation to better suit the operation and control of the particular maintenance programme.
2.2 For a newly type-certificated aircraft where no previously approved maintenance programme exists, it will be necessary for the owner or the MCAR-M Subpart G approved organisation to comprehensively appraise the manufacturer’srecommendations (and the MRB report where applicable), together with otherairworthiness information, in order to produce a realistic programme for approval.
2.3 For existing aircraft types it is permissible for the operator to make comparisons withmaintenance programmes previously approved. It should not be assumed that a programme approved for one owner or the MCAR-M Subpart G approved organisation would automatically be approved for another.
Evaluation should be made of the aircraft/fleet utilisation, landing rate, equipment fit and, in particular, the experience of the owner or the M.A Subpart G approved organisation when assessing an existing programme.
Where CAD is not satisfied that the proposed maintenance programme can be used as is, CAD should request appropriate changes such as additional maintenance tasks or de-escalation of check frequencies as necessary.
2.4 Critical Design Configuration Control Limitations (CDCCL)
If CDCCL have been identified for the aircraft type by the TC/STC holder, maintenance instructions should be developed. CDCCL’s are characterised by features in an aircraft installation or component that should be retained during modification, change, repair, or scheduled maintenance for the operational life of the aircraft or applicable component or part.
3. Amendments
Amendments (revisions) to the approved maintenance programme should be made by the owner or the MCAR-M Subpart G approved organisation, to reflect changes in the TC holder’s recommendations, modifications, service experience, or as required by the CAD.
4. Permitted variations to maintenance periods
The owner or the MCAR-M Subpart G approved organisation may only vary the periods prescribed by the programme with the approval of CAD or through a procedure developed in the maintenance programme and approved by the CAD.
5. Periodic review of maintenance programme contents
The owner or the MCAR-M Subpart G approved organisation’s approved maintenance programmes should be subject to periodic review to ensure that they reflect current TC holder’s recommendations, revisions to the MRB report if applicable, mandatory requirements and the maintenance needs of the aircraft.
The owner or the MCAR-M Subpart G approved organisation should review the detailed requirements at least annually for continued validity in the light of operating experience.
6. Reliability Programmes
Applicability
A reliability programme should be developed in the following cases:
(a)
the aircraft maintenance programme is based upon MSG-3 logic
(b)
the aircraft maintenance programme includes condition monitored components
(c)
the aircraft maintenance programme does not contain overhaul time periods for all significant system components
(d)
when specified by the Manufacturer’s maintenance planning document or MRB.
A reliability Programme need not be developed in the following cases:
(a)
the maintenance programme is based upon the MSG-1 or 2 logic but only contains hard time or on condition items
(b)
the aircraft is not a large aircraft according to MCAR-M
(c)
the aircraft maintenance programme provides overhaul time periods for all significant system components.
Note: for the purpose of this paragraph, a significant system is a system the failure of which could hazard the aircraft safety.
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