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c) Does the programme provide for time increase in overhaul times, periodic services, routine and service checks, phase checks and block overhauls?
d) Are provisions made for changing items having specified fixed time between overhaul to “on-condition”?
e) What substantiating data are provided to justify a time increase for emergency equipment which is not normally operated during routine flight?
f) Who establishes the increments of time increases, the sampling requirements, and other substantiation for each proposed action?
g) Are instructions available relative to manual revision concerning time increases and what will have to be accomplished prior to pursuing a subsequent time increase?
h) Does the programme provide for revision of the Operations Specifications, Part D — Maintenance whenever a change is made to the current document?
1.8.13.2 It should be ensured that the proposed time between overhauls (TBO) adjustment does not conflict with a corrective action programme established by a previous reliability analysis. A provision should be made for the AID to be advised when increases to time limitations of system/components controlled by the programme occur. Furthermore, operators should be encouraged where possible to include a graphic display of major system/component (engine/airframe) TBO escalation.
1.8.14 Approval of programmes
1.8.14.1 Maintenance reliability programme approvals are a means of complying with the CAA Regulations and, therefore, become part of the AOC holder’s operations specifications. The programmes are to be administered and controlled by the AOC holders and monitored by the AID Inspector. An operator's application for approval should be accompanied by a document describing programme operation. This document should contain the essentials of systems operation and any other instructions required because of the particular programme or character of maintenance organization involved.
1.8.14.2 The AOC holder should submit the maintenance reliability programme and standard for determining time limitations to be included in the operations specifications, Part D — Maintenance (it is not necessary to enter the entire document). Due to the differences encountered in the programmes submitted for approval, the operations specifications will vary somewhat from operator to operator.
1.8.14.3 An attempt should be made to list all the important elements that should be considered regardless of the programme being evaluated. It is recognized that all of the elements may not apply to a particular programme; however, the AID Inspector should use those that are appropriate to the programme being evaluated. Emphasis should be given to the elements entered in the operations specifications.
1.8.14.4 The procedures for implementing revisions to the programme should be described in sufficient detail to identify the isolated areas which require AID approval. The AOC holder should also identify the segment of the organization having overall responsibility for the approval of amendments to the programme. The areas involving programme revision which require AID approvals include:
a) reliability measurement;
b) changes involving performance standards, including instructions relating to the development of these standards;
c) data collection analysis;
d) data analysis methods and application to the maintenance programme;
e) procedures for adding or deleting systems or components; and
f) procedures for transferring systems or components to other programmes.
1.8.14.5 When evaluating programme revision procedures, consideration should also be given to the following:
a) Does the programme provide for periodic review to determine if the established performance standard is still realistic or in need of recalculation?
b) What distribution is given to approved revisions?
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适航手册 AIRWORTHINESS MANUAL(130)
