2.11Service life limit controls & component control/removal forecast.
Where the sub-contracted organisation performs planning activities, it should be specified that the organisation should be in receipt of the current flight cycles; flight hours; landings and/or calendar controlled details as applicable, at a frequency to be specified in the contract. The frequency should be such that it allows the organisation to properly perform the sub-contracted planning func-tions. It therefore follows that there will need to be adequate liaison between the operator, his Part-145 maintenance organisation(s) and the sub-contracted organisation. Additionally the contract should specify how the operator will be in possession of all current flight cycles, flight hours, etc. in order that the operator may assure the timely accomplishment of the required maintenance.
2.12Engine health monitoring
If the operator sub-contracts the on wing engine health monitoring, the sub-contracted organisation should be in receipt of all the relevant information to perform this task, including any parameter reading deemed necessary to be sup-plied by the operator for this control. The contract should also specify what kind of feedback information (such as engine limitation, appropriate technical advice, etc.) the organisation should provide to the operator.
2.13Defect control
Where the operator has sub-contracted the day-to-day control of technical log deferred defects this should be specified in the contract and should be adequate-ly described in the appropriate procedures. The operator’s MEL/CDL provides the basis for establishing which defects may be deferred and associated limits. The procedures should also define the responsibilities and actions to be taken for defects such as AOG situations, repetitive defects, and damage beyond type certificate holder’s limits.
For all other defects identified during maintenance, the information should be brought to the attention of the operator who dependant upon the proce-dural authority granted by the competent authority may determine that some defects can be deferred. Therefore, adequate liaison between the operator, his sub-
-contracted organisation and contracted Part-145 maintenance organisation should be ensured.
The sub-contracted organisation should make a positive assessment of potential deferred defects and consider potential hazards arising from the cumulative effect of any combination of defects. The sub-contracted organisations should liaise with the operator to gain his agreement following this assessment.
Deferment of MEL/CDL allowable defects can be accomplished by a contracted Part-
-145 organisation in compliance with the relevant technical log procedures, subject to the acceptance by the aircraft commander.
2.14Mandatory occurrence reporting
All incidents and occurrences that fall within the reporting criteria defined in Part-M and Part-145 should be reported as required by the respective require-ments. The operator should ensure adequate liaison exists with the sub-contract-ed organisation and the Part-145 organisation.
2.15Continuing airworthiness records
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