When may an authorized inspector (IA) perform an annual inspection on an aircraft?

The correct answer to when an authorized inspector (IA) may perform an annual inspection on an aircraft is when the owner requests it. An IA has the authority to conduct an annual inspection at any time within the 12-month period leading up to the inspection's due date. This flexibility allows aircraft owners to schedule inspections based on their operational needs or availability rather than being restricted to a specific month.

While it is essential for the inspection to be completed within the 12-calendar month period to ensure continued airworthiness, the timing of the actual inspection can be dictated by the owner's preference. This means that as long as the inspection is performed before the end of that period, it fulfills the regulatory requirements.

The other options suggest limitations that do not reflect the full scope of the IA's authority. For example, restricting inspections to only the month they are due does not allow for scheduling flexibility, and stating that inspections can only happen with approval from the local FSDO is inaccurate, as the IA has the autonomy to perform inspections without needing that approval each time.