Suitability for use of a specific propeller with a particular engine-airplane combination can be determined by reference to what informational source?

• A. Airworthiness Directives
• B. Aircraft Specifications
• C. Aircraft TCDS
• D. Aircraft Specifications or Aircraft TCDS

Answer: (D)

Understanding propeller suitability for a given engine-airplane setup comes from the official type design documentation. The Type Certificate Data Sheet lists exactly which propeller models are approved for use with a specific aircraft/engine combination and includes any installation limitations or conditions. That makes it the primary source for determining what propellers can be safely and legally used. Manufacturer aircraft specifications can also document approved configurations and provide supportive detail about equipment and propeller compatibility, so either source can be used to verify suitability. Airworthiness Directives, while important for safety and mandated changes, do not define general compatibility; they apply to safety remedies for specific circumstances and aren’t the reference for standard propeller suitability.