CS 27.1458 Lightweight flight recorder

• ED Decision 2023/001/R found in: CS-27 Amdt 10 - Small Rotorcraft (Feb 2023)

CS 27.1458 Lightweight flight recorder ED Decision 2023/001/R (a) Each lightweight flight recorder required by the applicable operating rules must be approved and must be installed so that: (1) there is an aural or visual means for pre-flight checking of the recorder for proper recording of data in the storage medium; and (2) it automatically starts recording prior to the rotorcraft being capable of moving under its own power and automatically stops recording after the rotorcraft is no longer capable of moving under its own power. (b) The container of the recording medium must be located and mounted so as to minimise the probability of the container rupturing or the recording medium being destroyed as a result of impact with the Earth’s surface and subsequent heat damage caused by a post-impact fire, to an acceptable level. (c) The recording medium container of the lightweight flight recorder in sub-paragraph (a) must: (1) have a high proportion of its outer surface area coloured in bright orange; and (2) have dimensions that are adequate for visually locating it on an accident scene. (d) Each flight parameter to be recorded as required by the applicable operating rules must be recorded as digital data or by means of images. (e) If the lightweight flight recorder in sub-paragraph (a) records a flight parameter as required by the applicable operating rules by means of images, the image source must be installed to provide images with a quality sufficient for reading the values of this flight parameter during all phases of the flight. (f) If the lightweight flight recorder in sub-paragraph (a) records images or audio of the flight crew area: (1) an ‘erase function’ must be provided, which can be operated by the commander and which modifies image and audio recordings made before the operation of that function, so that those recordings cannot be retrieved using normal replay or copying techniques; and (2) the probability of inadvertent operation of the erase function and the probability of actuation of that function during crash impact must be minimised. [Amdt 27/10]