Who is authorized to repair a fuel flow indicating system?

• A. The components can be repaired only by an FAA approved repair station certificated for the particular instruments
• B. Any licensed mechanic
• C. The engine manufacturer
• D. The airplane owner

Answer: (A)

Maintenance on fuel flow indicators must be performed only by facilities authorized for that exact instrument. Fuel flow systems are precision instruments that require specific calibration and test procedures, so repairs must be done by an FAA-approved repair station that holds certification for those particular instruments (or by the manufacturer through an approved service facility). This ensures the repair restores accuracy and maintains airworthiness.

A licensed mechanic or the airplane owner isn’t authorized to repair this kind of instrument, and while the engine manufacturer could handle service, they must be an FAA-approved repair station for the instrument in question.