GM1 145.A.50(a) Certification of maintenance

CAA ORS9 Decision No. 38

’Endangers flight safety’ means any instances where safe operation could not be assured, or which could lead to an unsafe condition. These It typically includes, but is are not limited to, significant cracking, deformation, corrosion or failure of primary structure, any evidence of burning, electrical arcing, significant hydraulic fluid or fuel leakage, and any emergency system or total system failure.

An airworthiness directive that is overdue for compliance is also considered to be a hazard to flight safety.

A certificate of release to service issued by a maintenance organisation certifies that the performed maintenance work, as agreed in the work order or the contract, has been completed in accordance with the applicable requirements and the maintenance organisation’s approved procedures. In the case of aircraft maintenance, it does not necessarily mean that the aircraft is in airworthy condition. Ensuring that the aircraft is airworthy before each flight always remains the responsibility of the person or organisation managing the aircraft continuing airworthiness.