Final answer:
The CVR and flight recorder data are usually kept for a minimum of two years after an accident to aid in investigation and improving aviation safety.
Step-by-step explanation:
The cockpit voice recorder (CVR) and flight recorder, also known as the black box, are crucial devices in aviation. The CVR records all communications and sounds in the cockpit, while the flight recorder captures specific flight parameters. In the event of an accident or occurrence resulting in terminating the flight, the CVR and flight recorder data are usually kept for a minimum of two years.
The CVR and flight recorder data are preserved for investigation purposes. These devices provide valuable information that helps determine the cause(s) of accidents and improve aviation safety. However, the exact duration for which the data is kept may vary depending on national regulations and specific circumstances surrounding the accident.
Overall, the CVR and flight recorder data play a vital role in accident investigation and are typically retained for a minimum of two years.