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

CAA ORS9 Decision No. 1

From 1 July 2024 this will be replaced with GM1 145.A.50(a)

’Endangers the flight safety’ means any instances where safe operation could not be assured or which could lead to an unsafe condition. It typically includes, but is 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 overdue for compliance is also considered a hazard to flight safety.