ED Decision 2021/005/R
ADDITIONAL USEFUL INFORMATION
(a) Experience has shown the usefulness, for analysing incidents and for training purposes, of recording additional information. In particular, audio of the flight crew compartment and information on the handling of the aircraft (such as position of flight controls, position of engine controls, fuel and oil indications, aircraft configuration selection), and an external view are very useful for such purposes. To capture such information, simple equipment such as an integrated microphone and integrated camera may be sufficient.
(b) If the flight recorder includes optional capabilities such as described in (a), their recording duration is recommended to be at least 2 hours.
(c) If the flight recorder is capable of acquiring flight parameters from some aircraft systems, it is advised to give priority to the flight parameters listed in Annex II-B to EUROCAE Document ED-155 or the flight parameters listed in Annex II-A to EUROCAE Document ED-112. Indeed, these flight parameters were selected based on their relevance in many safety investigations.
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