FAA Aviation Mechanic General (AMG)Regulations, Records and Human FactorsHard
A mechanic needs to verify the approved propeller models that may be installed with a specific engine on a certificated aircraft. Which document should the mechanic consult?
- AThe aircraft's Type Certificate Data Sheet (TCDS)
- BFAA Form 337
- CThe mechanic's Inspection Authorization renewal record
- DThe manufacturer's Service Difficulty Report
Show answer & explanationAnswer & explanation
Correct answer: A. The aircraft's Type Certificate Data Sheet (TCDS)
The Type Certificate Data Sheet (TCDS) lists the approved engine, propeller, and equipment combinations, along with weight and balance limits, for a certificated aircraft model. It is the authoritative source for approved configurations.
Why the other options are wrong
- B. Form 337 documents a specific major repair/alteration, not general approved combinations.
- C. IA renewal records track a mechanic's activity, not aircraft configuration data.
- D. Service Difficulty Reports document in-service problems, not approved configurations.
Type Certificate Data Sheet (TCDS)
An FAA document listing the approved design, engine/propeller combinations, weight and balance limits, and other airworthiness specifications for a certificated aircraft, engine, or propeller.
- Issued as part of the type certification process.
- Used to verify approved parts, configurations, and limits.
- Essential reference for determining major vs. minor alteration status.
Memory trick: 'TCDS = the recipe card' for what's legally allowed on the aircraft.