FAA Aviation Mechanic Airframe (AMA)Airframe InspectionMedium
A technician finds a shallow dent in the leading edge skin of an aluminum wing during a scheduled inspection. Before determining if the damage is airworthy, which document should the technician consult to establish allowable damage limits?
- AThe Illustrated Parts Catalog (IPC)
- BThe aircraft's Type Certificate Data Sheet
- CThe Weight and Balance Data sheet
- DThe Structural Repair Manual (SRM)
Show answer & explanationAnswer & explanation
Correct answer: D. The Structural Repair Manual (SRM)
The Structural Repair Manual (SRM) contains manufacturer-approved allowable damage limits, blend-out ratios, and repair procedures for specific structural components. The TCDS lists certification data but not damage tolerance criteria.
Why the other options are wrong
- A. The IPC identifies part numbers and locations, not damage limits.
- B. TCDS lists certification limitations, not structural damage tolerance data.
- C. Weight and balance data addresses CG limits, not structural damage.
Structural Repair Manual (SRM)
A manufacturer-published document providing approved data on allowable damage limits, repair procedures, and materials for aircraft structure.
- Provides blend-out and allowable damage limits
- Used to determine if damage is repairable or requires replacement
- Considered approved data for repairs when followed exactly
- Specific to aircraft make/model
Memory trick: SRM = 'Skin Repair Menu' — the recipe book for fixing dents