Which of the following may be grounds for revocation of a radio operator's certificate?

• A. Failure to renew on time
• B. Willful destruction of radio equipment
• C. Unauthorized radio usage
• D. Loss of medical certificate

Answer: (B)

Deliberate destruction of radio equipment directly undermines the safety and reliability of aviation communications. When someone purposefully harms the equipment, they demonstrate a flagrant disregard for regulatory rules, maintenance standards, and the trust placed in a radio operator to keep systems functioning. That level of misconduct threatens operational safety, so revocation of the certificate is a appropriate punishment to prevent continued risk.

Administrative issues like a failure to renew on time tend to be about paperwork and privileges rather than unsafe conduct. Unauthorized radio usage is a violation and could lead to penalties or suspension, but it doesn’t inherently show the same deliberate harm to equipment that would justify revocation. Loss of a medical certificate is a separate credential entirely and doesn’t directly reflect the operator’s conduct with radio gear.