.
in the absence of specific recommendations of the Type Certificate Holder.
.
to provide alternate instructions to those described in the subparagraph 1 above, with the objective of providing flexibility to the operator.
3.
Where an aircraft type has been subjected to the MRB report process, an operator should normally develop the initial operator’s aircraft maintenance programme based upon the MRB report.
4.
Where an aircraft is maintained in accordance with an aircraft maintenance programme based upon the MRB report process, any associated programme for the continuous surveillance of the reliability, or health monitoring of the aircraft should be considered as part of the aircraft maintenance programme.
5.
Aircraft maintenance programmes for aircraft types subjected to the MRB report process should contain identification cross reference to the MRB report tasks such that it is
always possible to relate such tasks to the current approved aircraft maintenance programme. This does not prevent the approved aircraft maintenance programme from being developed in the light of service experience to beyond the MRB report recommendations but will show the relationship to such recommendations
6.
Some approved aircraft maintenance programmes, not developed from the MRB process, utilise reliability programmes. Such reliability programmes should be considered as a part of the approved maintenance programme.
7.
Alternate and/or additional instructions to those defined in paragraphs MCAR-M.302(d)(i) and (ii), proposed by the owner or the operator, may include but are not limited to the following:
.
Escalation of the interval for certain tasks based on reliability data or other supporting information. Appendix I recommends that the maintenance programme contains the corresponding escalation procedures. The escalation of these tasks is directly approved by CAD, except in the case of ALIs (Airworthiness Limitations), which are approved by the State of Design.
.
More restrictive intervals than those proposed by the TC holder as a result of the reliability data or because of a more stringent operational environment.
.
Additional tasks at the discretion of the operator.
AMC M.302 (f) Aircraft Maintenance Programme - reliability programmes.
1.
Reliability programmes should be developed for aircraft maintenance programmes based upon maintenance steering group (MSG) logic or those that include condition monitored components or that do not contain overhaul time periods for all significant system components.
2.
Reliability programmes need not be developed for aircraft not considered as large aircraft or that contain overhaul time periods for all significant aircraft system components.
3.
The purpose of a reliability programme is to ensure that the aircraft maintenance programme tasks are effective and their periodicity is adequate.
4.
The reliability programme may result in the escalation or deletion of a maintenance task, as well as the de-escalation or addition of a maintenance task
5.
A reliability programme provides an appropriate means of monitoring the effectiveness of the maintenance programme.
6.
Appendix 1 to AMC MCAR-M.302 gives further guidance.
AMC M.304 Data for modifications and repairs
A person or organisation repairing an aircraft or component should assess the damage against published approved repair data and the action to be taken if the damage is beyond the limits or outside the scope of such data. This could involve any one or more of the following options; repair by replacement of damaged parts, requesting technical support from the type certificate holder or from an organisation approved in accordance with MCAR-21 and finally CAD approval of the particular repair data.
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