To perform the CVDR preflight functional check, what button should be pressed for how many seconds?

• A. Erase, 10, TEST
• B. TEST, 5, TEST
• C. TEST, 5, CVR FAULT
• D. TEST, 10, TEST

Answer: (B)

The correct choice is the one that suggests pressing the TEST button for five seconds. This procedure aligns with standard protocol for performing a CVDR (Cockpit Voice Data Recorder) preflight functional check. By pressing the TEST button for the specified duration, the system activates its self-test and performs essential diagnostics to ensure that all systems are functioning properly.

This check is crucial for verifying that the CVDR is operational and ready for recording during flight. The confirmation of successful self-test typically includes auditory indicators or visual displays, which provide assurance that the device will capture cockpit audio correctly. Understanding the timing and the use of the correct button is vital for compliance with aviation safety standards, ensuring that the CVR will function as needed in operational scenarios.