Inspection Authorization Privileges, Limitations, and Administrative Responsibilities
Who holds the authority
An inspection authorization is granted to a mechanic holding both airframe and powerplant ratings, actively engaged in aircraft maintenance for at least three years, with a fixed base of operations and the equipment, facilities, and inspection data needed to do the work. The authorization expires March 31 of odd-numbered years and is renewed on evidence of 16 hours of acceptable training within the preceding 24 months, or by retaking the test.
What it allows
An IA may perform annual inspections and perform or supervise progressive inspections. An IA may inspect and approve for return to service an aircraft, airframe, engine, propeller, or appliance after a major repair or major alteration, provided the work conforms to approved data and the IA actually inspected it.
What it does not allow
The IA cannot create approved data, grant a field approval, extend an airworthiness limitation, approve an alternate method of AD compliance, or approve work outside the ratings held. Approval cannot be delegated by paperwork; supervision does not replace inspection. When approved data are missing, the correct action is to stop work and obtain data through STC, designee, or FAA channels.
Administrative duties
Maintain a fixed base and current inspection data, keep the FAA advised of a current address, make records available to the FAA on request, and document approvals honestly. Suspension or revocation of the mechanic certificate removes the authorization with it.
Rule of thumb
Approval requires three elements together: work conforms to approved data, the IA personally verified conformity, and the records (including Form 337 where required) are complete and signed.