Description

Cockpit Voice Recorder (CVR) - a device used to record the audio environment in the flight deck for accident and incident investigation purposes. The CVR records and stores the audio signals of the microphones and earphones of the pilots’ headsets and of an area microphone installed in the cockpit.

Figure 1: Cockpit Voice Recorder

Regulatory Requirements

In 2015, the European Union Aviation Safety Agency (EASA) amended regulations to extend required recording duration to 25 hours. The 25-hour mandate took effect on January 1, 2021. The regulation requires any aircraft with a maximum takeoff weight of 27,000 kg (60,000 lbs) or more, manufactured about January 1, 2022, to be equipped with a CVR that has at least 25 hours of recording capacity.