Flight data recorders.

CFR · 2024-01-01 · US · Title 14

(a) Each flight recorder required by the operating rules of this chapter must be installed so that— (1) It is supplied with airspeed, altitude, and directional data obtained from sources that meet the accuracy requirements of §§ 25.1323, 25.1325, and 25.1327, as appropriate; (2) The vertical acceleration sensor is rigidly attached, and located longitudinally either within the approved center of gravity limits of the airplane, or at a distance forward or aft of these limits that does not exceed 25 percent of the airplane's mean aerodynamic chord; (3)(i) It receives its electrical power from the bus that provides the maximum reliability for operation of the flight data recorder without jeopardizing service to essential or emergency loads. (ii) It remains powered for as long as possible without jeopardizing emergency operation of the airplane. (4) There is an aural or visual means for preflight checking of the recorder for proper recording of data in the storage medium; (5) Except for recorders powered solely by the engine-driven electrical generator system, there is an automatic means to simultaneously stop a recorder that has a data erasure feature and prevent each erasure feature from functioning, within 10 minutes after crash impact; (6) There is a means to record data from which the time of each radio transmission either to or from ATC can be determined; (7) Any single electrical failure external to the recorder does not disable both the cockpit voice recorder and the fligh

official document · source cfr-2024 · id 14:§ 25.1459