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2.5.7.2 In addition to the items required to be reported by the State of the Operator, the following items should be included:
a) in-flight shut-downs;
b) diversion or turn-back;
c) uncommanded power changes or surges;
d) inability to control the engine or obtain desired power;
e) problems with systems critical to extended diversion time operations; and f) any other event detrimental to extended diversion time operations.
2.5.7.3 The report should also identify the following:
a) aircraft identification (make and serial number);
b) engine identification (make and serial number);
c) total time, cycles and time since last shop visit;
d) for systems and engines, time since overhaul or last inspection of the defective unit;
e) phase of flight; and
f) corrective action.
2.5.8 Propulsion system monitoring
The operator’s assessment of propulsion systems reliability for the extended diversion time operations fleet should be made available to the State of the Operator (with the supporting data) on at least a monthly basis to ensure that the approved maintenance programme continues to maintain the level of reliability necessary for the operator’s extended diversion time operational authority. The assessment should include, as a minimum, engine hours flown in the period, in-flight shut-down rate for all causes and engine removal rate computed on a 12-month rolling average basis. Any adverse sustained trend would require an immediate evaluation to be accomplished by the operator in consultation with the State of the Operator. The evaluation may result in corrective action or operational restriction being applied.
2.5.9 Maintenance training
Maintenance training should take into account the requirements of extended diversion time operations. These requirements should be included in normal maintenance training. The goal of this programme is to ensure that all personnel involved in extended diversion time operations are provided with the necessary training so that the extended diversion time operations maintenance tasks are properly accomplished and to emphasize the special nature of extended diversion time operations maintenance requirements. Qualified maintenance personnel are those that have completed the operator’s or manufacturer’s training programme which includes the requirements identified above.
2.5.10 Parts control
The operator should develop a parts control programme that ensures the proper parts and configuration are maintained for extended diversion time operations. The programme includes verification that parts placed on extended diversion time operations aircraft during parts borrowing or pooling arrangements, as well as those parts used after repair or overhaul, maintain the necessary extended diversion time operations configuration for that aircraft. As provided by Chapter 4.7.2 of Annex 6 Part I, since the aeroplanes with more than two engines, and for which an application for type certification was submitted prior to [applicability date of this Standard], need not comply with the requirements of Annex 8, Part IIIB, G.2.8, there will be no requirement for engineering modification for configuration changes except for installation of cargo fire suppression as required by 4.7.6 of Annex 6, Part I; and therefore may not have a need to develop a specific parts control programme.
2.6 Requirements for systems performance and reliability assessment
2.6.1 Introduction
2.6.1.1 The following material provides guidance to the State of Design for the assessment of the level of performance and reliability of aeroplane systems and associated equipment required by the Standard of Annex 6, Part I, 4.7.2 and Attachment E of for extended diversion time operations.
2.6.1.2 The probability of a failure condition to happen and the maximum consequences of that failure condition accepted for aircraft certification are as follows:
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适航手册 AIRWORTHINESS MANUAL(151)
