Article 231 Use of flight recording systems

On a flight on which a flight data recorder, a cockpit voice recorder or a combined cockpit voice recorder and flight data recorder is required by paragraph 4(4) F1or (5) of Part 1 of Schedule 6 to be carried in an aeroplane, the recorder must always be in use from the beginning of the take-off run to the end of the landing run.

On any flight on which a cockpit voice recorder, a flight data recorder or a combined cockpit voice recorder and flight data recorder is required by paragraph F24(13) of Part 1 of Schedule 6 to be carried in a helicopter, the recorder must always be in use from the time the rotors first turn for the purpose of taking off until the rotors are next stopped.