What data must be used for major repairs or alterations signed off by IA?

What data must be used for major repairs or alterations signed off by IA?

• A. Repairs or alterations must be performed using approved data.
• B. Any data provided by the owner without verification.
• C. Verbal approval from the pilot.
• D. Data from non-approved sources.

Answer: (A)

The crucial idea is that major repairs or major alterations must be performed using data that has been approved by the FAA. This ensures there are vetted instructions, materials, tolerances, and inspection criteria that keep the aircraft airworthy and safe. When an IA signs off such work, they are vouching that the procedures followed come from data that the FAA has approved for use on that specific aircraft or modification. Using data provided by the owner without FAA verification isn’t acceptable because it may not meet safety and airworthiness standards. Verbal approval from a pilot isn’t a substitute for approved technical data, since it doesn’t guarantee the correct procedures or compliance. Data from non-approved sources also isn’t acceptable because it hasn’t undergone the FAA’s review and may be unreliable or unsafe. Approved data can include manufacturer repair data, FAA-approved field approvals, Airworthiness Directives, PMAs, or STCs—any data that has been explicitly authorized for use on the aircraft and modification in question. The IA’s job is to confirm that the work follows that approved data and that the data is applicable to the specific airframe, engine, and configuration.

The crucial idea is that major repairs or major alterations must be performed using data that has been approved by the FAA. This ensures there are vetted instructions, materials, tolerances, and inspection criteria that keep the aircraft airworthy and safe. When an IA signs off such work, they are vouching that the procedures followed come from data that the FAA has approved for use on that specific aircraft or modification.

Using data provided by the owner without FAA verification isn’t acceptable because it may not meet safety and airworthiness standards. Verbal approval from a pilot isn’t a substitute for approved technical data, since it doesn’t guarantee the correct procedures or compliance. Data from non-approved sources also isn’t acceptable because it hasn’t undergone the FAA’s review and may be unreliable or unsafe.

Approved data can include manufacturer repair data, FAA-approved field approvals, Airworthiness Directives, PMAs, or STCs—any data that has been explicitly authorized for use on the aircraft and modification in question. The IA’s job is to confirm that the work follows that approved data and that the data is applicable to the specific airframe, engine, and configuration.