Which procedure must be followed at the end of the flight regarding the cockpit voice recorder?

At the end of a flight, the correct procedure to follow regarding the cockpit voice recorder (CVR) is to pull the circuit breaker. This action serves a crucial purpose: it prevents the CVR from overwriting the recorded data. The CVR records all cockpit sounds and interactions, and retaining this data is essential for safety investigations or analyses in case of an incident. By pulling the circuit breaker, the integrity of the recording is preserved, allowing for a comprehensive review if necessary.

This procedure is vital not only for compliance with aviation regulations but also for ensuring that any important information recorded during the flight is available for future reference. The correct handling of the CVR at the end of a flight reflects best practices in aviation safety and operational protocols.