What additional information is required on a work order for a minor repair noted during an annual inspection?

The correct answer is the signature and certificate number of the person approving the repair. For minor repairs noted during an annual inspection, the regulatory requirements stipulate that the work performed must be documented and approved by an authorized individual. This includes the signature of the person performing the work, along with their certification number, which verifies their qualifications and authority to conduct such repairs.

Documentation is a critical part of maintaining an aircraft's airworthiness and ensures that any repairs are traceable and comply with the applicable regulations. The signature and certificate number serve as evidence that the repair has been completed to the required standards and that the person doing the work is qualified to certify it.

Other options, while they may have their own relevance in certain contexts, do not directly pertain to the specific requirements for minor repairs noted during an annual inspection. For instance, technical specifications provide guidelines for doing the work but are not mandated on a work order itself. A maintenance release signed by a repair station is associated with total maintenance activities rather than individual minor repairs, while the inspection date, although important for tracking maintenance schedules, does not fulfill the requirement for authorizing repairs.