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When maintenance is contracted to more than one Part-145 approved organisation (for example aircraft base maintenance to X, engine maintenance to Y and line maintenance to Z1, Z2&Z3), attention should be paid to the consistency of the different maintenance contracts.
A maintenance contract is not normally intended to provide appropriate detailed work instruction to the personnel (and is not normally distributed as such). Accordingly there should be established organisational responsibility, procedures and routines in the operator’s M.A. Subpart G & Part-145 organisations to take care of these functions in a satisfactory way such that any person involved is informed about his/her responsibility and the procedures which apply. These procedures and routines can be included/appended to the operator’s CAME and maintenance organisation’s MOE or consist in separate procedures. In other words procedures and routines should reflect the conditions of the contract.
2. Aircraft/Engine maintenance
The following subparagraphs may be adapted to a maintenance contract that applies to aircraft base maintenance, aircraft line maintenance and engine mainte-nance.
Aircraft maintenance also includes the maintenance of the engines and APU while they are installed on the aircraft.
2.1. Scope of work
The type of maintenance to be performed by the Part-145 approved organisation should be specified unambiguously. In case of line and/or base maintenance, the contract should specify the aircraft type and, preferably include the aircraft’s regis-trations.
In case of engine maintenance, the contract should specify the engine type.
2.2. Locations identified for the performance of maintenance/ Certificates held
The place(s) where base, line or engine maintenance, as applicable, will be per-formed should be specified. The certificate held by the maintenance organisation at the place(s) where the maintenance will be performed should be referred to in the contract. If necessary the contract may address the possibility of performing mainte-nance at any location subject to the need for such maintenance arising either from the unserviceability of the aircraft or from the necessity of supporting occasional line maintenance.
2.3. Subcontracting
The maintenance contract should specify under which conditions the Part-145 approved organisation may subcontract tasks to a third party (whether this third party is Part-145 approved or not). At least the contract should make reference to
145.A.75. Additional guidance is provided by the AMC 145.A.75. In addition the operator may require the Part-145 approved organisation to obtain the operator’s approval before subcontracting to a third party. Access should be given to the operator to any information (especially the quality monitoring information) about the Part-145 approved organisation’s subcontractors involved in the contract. It should however be noted that under operators responsibility both the operator and its competent authority are entitled to be fully informed about subcontracting, although the competent authority will normally only be concerned with aircraft, engine and APU subcontracting.
2.4. Maintenance programme
The maintenance programme under which the maintenance has to be performed has to be specified. The operator should have that maintenance programme approved by its competent authority. When the maintenance programme is used by several operators, it is important to remember that it is the responsibility of each operator to have that maintenance programme approved under its own name by its competent authority.
2.5. Quality monitoring
The terms of the contract should include a provision allowing the operator to per-form a quality surveillance (including audits) upon the Part-145 approved organi-sation. The maintenance contract should specify how the results of the quality surveillance are taken into account by the Part-145 approved organisation (See also paragraph 2.22. ‘Meetings’).
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CONTINUING AIRWORTHINESS REQUIREMENTS – PART M 2(71)
