What is the purpose of the FDR/CVR in maintenance and safety investigations?

• A. Record landing gear maintenance photos.
• B. Record weather radar data for safety.
• C. Assist with communications.
• D. Record flight data and cockpit audio to support investigations and maintenance trending.

Answer: (D)

The main idea here is that the FDR (Flight Data Recorder) and CVR (Cockpit Voice Recorder) are designed to capture a flying event’s technical data and cockpit communications to support investigations and maintenance trending. The flight data recorder logs numerous parameters such as airspeed, altitude, engine metrics, and control surface positions, while the cockpit voice recorder captures the pilots’ conversations and cockpit sounds. Together, they let investigators reconstruct what happened, verify the sequence of events, and link any system faults to actions taken in the cockpit. This data also supports maintenance trending by identifying recurring issues, equipment wear, or anomalies that aren’t obvious from a single event.

The other options don’t fit because photos of landing gear, weather radar data, or communications support aren’t the primary purpose of the FDR/CVR. Those tools are about recording a flight’s data and cockpit audio to aid investigations and ongoing maintenance analysis.