AMC 145.A.10 Scope    

CAA ORS9 Decision No. 1

From 1 July 2024 this will be replaced with AMC1 145.A.10

1. Line Maintenance should be understood as any maintenance that is carried out before flight to ensure that the aircraft is fit for the intended flight.

    (a) Line Maintenance may include:

      — Trouble shooting.

      — Defect rectification.

      — Component replacement with use of external test equipment if required. Component replacement may include components such as engines and propellers.

      — Scheduled maintenance and/or checks including visual inspections that will detect obvious unsatisfactory conditions/discrepancies but do not require extensive in depth inspection. It may also include internal structure, systems and powerplant items which are visible through quick opening access panels/doors.

      — Minor repairs and modifications which do not require extensive disassembly and can be accomplished by simple means.

    (b) For temporary or occasional cases (ADs, SBs) the Quality Manager may accept base maintenance tasks to be performed by a line maintenance organisation provided all requirements are fulfilled as defined by the CAA.

    (c) Maintenance tasks falling outside these criteria are considered to be Base Maintenance.

    (d) Aircraft maintained in accordance with ‘progressive’ type programmes should be individually assessed in relation to this paragraph. In principle, the decision to allow some ‘progressive’ checks to be carried out should be determined by the assessment that all tasks within the particular check can be carried out safely to the required standards at the designated line maintenance station.

2. Where the organisation uses facilities both inside and outside the UK such as satellite facilities, sub-contractors, line stations etc., such facilities may be included in the approval without being identified on the approval certificate subject to the maintenance organisation exposition identifying the facilities and containing procedures to control such facilities and the CAA being satisfied that they form an integral part of the approved maintenance organisation.