Continuing Airworthiness Management and Maintenance Programs
Continuing Airworthiness System
Continuing airworthiness ensures an aircraft remains in a condition that meets its type design and is safe to operate. In Brazil, operators under RBAC 121/135 must have a continuing airworthiness management organization (CAMO) or equivalent, and an approved aircraft maintenance program (AMP). The AMP is based on the manufacturer's maintenance planning document (MPD) and may be adjusted with ANAC approval. Key elements include scheduled maintenance tasks, airworthiness directives, life-limited parts, and reliability programs.
Concepts to Master
Understand the difference between hard-time, on-condition, and condition-monitoring maintenance. Know the role of the maintenance review board (MRB) report and how it feeds the AMP. Be clear on the control of life-limited parts and the requirement for traceability. Know the maintenance release and certificate of release to service (CRS) requirements, and the record-keeping obligations. Also understand the interface between the CAMO and the maintenance organization (RBAC 145), and the operator's responsibility for the airworthiness of leased aircraft.
Traps
A common trap is assuming the AMP is fixed; it must be updated when the manufacturer revises the MPD or when ADs require new tasks. Another is confusing the maintenance program approval with the maintenance organization approval. Also watch for the treatment of deferred defects under the minimum equipment list (MEL) and the requirement that deferrals be controlled by the CAMO.
Worked Example / Rule of Thumb
Rule: "The AMP is the bridge between design and daily maintenance." Example: A new AD requires repetitive inspections every 500 flight hours. The CAMO must incorporate this into the AMP, assign the task to an approved maintenance organization, and ensure records are kept. If the operator uses a reliability program, the AD task cannot be escalated without approval.