Repair Station / Maintenance Organization Approval
Section 12: Continued Airworthiness & Maintenance
Definition
A maintenance facility certificated by the aviation authority to perform maintenance, preventive maintenance, and alterations on aircraft, engines, propellers, and appliances. In the FAA system, these are certificated under 14 CFR Part 145 as Repair Stations. In EASA, they are approved under Part-145 as Maintenance Organisations. In TCCA, they are approved under CAR 573 as Approved Maintenance Organizations (AMOs).
Where This Shows Up
Part 145 repair stations / maintenance organizations are essential to the aviation maintenance ecosystem because they provide the specialized facilities, equipment, and trained personnel needed for shop-level (SRU-level) repair of avionics LRUs and other aircraft components. The certificate or approval specifies the operations specifications (ratings) that define what types of maintenance the organization is authorized to perform. Ratings typically cover airframe, powerplant, propeller, radio, instrument, and accessory categories, with specific limitations within each. The organization must maintain a quality system, training program, and tooling/equipment appropriate to its authorized work scope.
Primary Sources
Repair Stations — FAA certification requirements for maintenance facilities.
Maintenance Organisation Approvals — EASA requirements for approved maintenance organizations.
Approved Maintenance Organizations — TCCA requirements for maintenance organization approval.
Across Jurisdictions
14 CFR Part 145
FAA-certificated facility with specific ratings and limitations. Must maintain a repair station manual, quality control system, and required personnel. Subject to FAA surveillance.
EASA Part-145, Regulation (EU) 1321/2014
EASA-approved maintenance organization with a Maintenance Organisation Exposition (MOE) defining its scope, procedures, and quality system. Approved by the National Aviation Authority (NAA) of the EASA member state.
CAR 573
TCCA-approved facility under CAR 573 with a Maintenance Policy Manual (MPM) defining its capabilities, procedures, and quality assurance program.
Related Terms
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