# Commission Implementing Regulation (EU) 2015/1018 of 29 June 2015 laying down a list classifying occurrences in civil aviation to be mandatorily reported according to Regulation (EU) No 376/2014 of the European Parliament and of the Council (Text with EEA relevance), Division 1.2: Technical occurrences

Extent: E+W+S+N.I.

(1) Abnormal severe vibration (for example: aileron or elevator ‘flutter’, or of propeller).
(2) Any flight control not functioning correctly or disconnected.
(3) A failure or substantial deterioration of the aircraft structure.
(4) A loss of any part of the aircraft structure or installation in flight.
(5) A failure of an engine, rotor, propeller, fuel system or other essential system.
(6) Leakage of any fluid which resulted in a fire hazard or possible hazardous contamination of aircraft structure, systems or equipment, or risk to occupants.

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Source: https://www.legislation.gov.uk/eur/2015/1018/annex/V/division/1/division/1.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2015-1018/annex-V/division-1/division-1.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.