- Occurrences related to the operation of the aircraft.
- Occurrences related to technical conditions, maintenance and repair of aircraft.
- Occurrences related to air navigation services and facilities.
- Occurrences related to aerodromes and ground services.
- Voluntary reports, which may involve an actual or potential aviation safety risk
Occurrence: means any safety-related event which endangers or which, if not corrected or addressed, could endanger an aircraft, its occupants or any other person and includes in particular an accident or serious incident according Regulation (EU) No 996/2010.