NTSB urge the Federal Aviation Administration (FAA) for an extended duration of recording on cockpit voice recorders (CVRs) on large commercial aircraft.
From its current last 2 hours of recording, NTSB “Require all newly manufactured airplanes that must have a cockpit voice recorder (CVR) be fitted with a CVR capable of recording the last 25 hours of audio. (A-18-30)”
“By January 1, 2024, require retrofit of all cockpit voice recorders (CVR) on all airplanes required to carry both a CVR and a flight data recorder with a CVR capable of recording the last 25 hours of audio. (A-18-31)”
The NTSB said that in the current 2 hours of recording valuable CVR data continue to be overwritten and are unavailable for safety investigations.
The European Aviation Safety Agency (EASA) already has adopted a similar requirement, scheduled to take effect Jan. 1, 2021, for newly manufactured, large commercial aircraft. An International Civil Aviation Organization requirement, scheduled to take effect Jan. 1, 2021, for aircraft with a maximum certificated takeoff mass of more than 27,000 kg (59,524 lb), also calls for installation of CVRs capable of recording the last 25 hours of aircraft operation.