What is a Cockpit Voice Recorder (CVR) used for?

• A. Records cockpit audio and radio conversations for safety investigations.
• B. Records cockpit instrument outputs for training.
• C. Logs passenger announcements during flight.
• D. Stores firmware updates for avionics.

Answer: (A)

A Cockpit Voice Recorder is used to capture cockpit audio and communications for safety investigations. It records what the pilots say to each other, what they say to air traffic control, and other ambient sounds inside the cockpit. The value lies in providing a precise, time-stamped audio record of crew actions, decisions, and communications during flight events, which investigators analyze to understand what happened and why.

This is different from instrument data: recording cockpit instrument outputs and flight parameters is the job of a flight data recorder (or DFDR), not the CVR. And recording passenger announcements or storing firmware updates for avionics aren’t functions of the CVR, since those relate to passenger systems or maintenance updates rather than cockpit audio.