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22. Failure of the bleed-air system/environmental control system on an aircraft
(which had been properly maintained) either immediately prior to departure or in-flight.
23. Premature failure of life-limited parts (as referenced in applicable maintenance data,
contained within the aircraft maintenance manual, or Maintenance Planning Document (MPD),
or Maintenance Review Board Report (MRBR)) prior to their scheduled inspection/removal/retirement
date (where those parts had been maintained in accordance with the required maintenance programme).
25. Failure of necessary or required aircraft systems (for example the cooling system, avionics
system, flight control system, flaps, slats, rudders, thrust reverser, landing gear) either immediately
prior to departure or in-flight (where those systems had been maintained in accordance with the
required maintenance programme)
26. Any other technical defects which become apparent immediately prior to departure or in-flight
(where the system or part had been maintained in accordance with the required maintenance
programme) and which require investigation and/or repair before the aircraft is airworthy for the intended flight.
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