What is the duration of a mechanic certificate?

A mechanic certificate issued by the FAA remains effective until it is surrendered by the holder, suspended due to violations, or revoked for various reasons. This means that as long as a mechanic meets the qualifications and maintains compliance with regulations, they can continue to use their certificate indefinitely. This structure is designed to encourage ongoing competence and adherence to safety standards in the aviation industry, without imposing arbitrary renewal timelines that might not account for a mechanic's experience or continued training.

The other options imply a limitation or conditions under which the certificate can be rendered invalid, which is not the case for a well-maintained mechanic certificate. In contrast, the mechanic's ongoing responsibilities include practicing within the rules set by the FAA to ensure that their certification remains valid.