Which of these does NOT need to be included in the records for AD compliance?

The option indicating the flight hours since last maintenance does not need to be included in the records for Airworthiness Directive (AD) compliance because the primary focus of the compliance records is on showing the actions taken to address the AD and ensuring continued airworthiness. The method of compliance, the current status of all applicable ADs, and the signature of the person who performed the work are all essential elements that provide accountability and traceability for the compliance process. These details ensure that the aircraft meets regulatory requirements and that there is a clear record of maintenance history regarding specific directives. However, while flight hours can be useful for maintenance scheduling and operational context, they are not a legal requirement for documenting AD compliance specifically.