Which document must a pilot carry that includes details on their radio operator certificate?

The correct choice is the ROC-A certification. This document serves as proof that the pilot has been trained and certified to operate radio communications equipment on board an aircraft. The ROC-A certification contains pertinent details such as the certificate holder’s name, the type of certification, and any limitations or endorsements associated with the certificate.

Carrying this certification is essential for pilots to demonstrate compliance with regulatory requirements during flight operations. In addition, it ensures that the pilot is qualified to communicate effectively with air traffic control and other aircraft, which is crucial for safety in aviation.

On the other hand, a flight log is primarily used to record flight hours and details about specific flights but does not provide information regarding certification. A pilot training manual serves as an educational resource for pilots but does not act as a certification document. Lastly, a maintenance log is focused on aircraft maintenance records, not pilot qualifications.