Which document would you consult to determine propeller compatibility with a given engine-airplane combination?

Which document would you consult to determine propeller compatibility with a given engine-airplane combination?

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

Answer: (B)

The key idea is that official propeller compatibility with a given engine–airplane setup is defined in the Type Certificate Data Sheet, which is the authoritative source for approved engine–propeller combinations and installation limits. That document is sometimes referred to as the Aircraft Specifications, or as the Aircraft TCDS, because it contains the certified design data and all approved configurations. So selecting the option that includes both Aircraft Specifications or Aircraft TCDS points to the correct, official source of the compatibility information. Airworthiness Directives, by contrast, address mandatory safety actions for existing aircraft and do not list approved propeller configurations. Relying on Aircraft Specifications alone or on Aircraft TCDS alone omits the broader, official phrasing used in many references, whereas the combined form aligns with how the certification data is accessed.

The key idea is that official propeller compatibility with a given engine–airplane setup is defined in the Type Certificate Data Sheet, which is the authoritative source for approved engine–propeller combinations and installation limits. That document is sometimes referred to as the Aircraft Specifications, or as the Aircraft TCDS, because it contains the certified design data and all approved configurations. So selecting the option that includes both Aircraft Specifications or Aircraft TCDS points to the correct, official source of the compatibility information.

Airworthiness Directives, by contrast, address mandatory safety actions for existing aircraft and do not list approved propeller configurations. Relying on Aircraft Specifications alone or on Aircraft TCDS alone omits the broader, official phrasing used in many references, whereas the combined form aligns with how the certification data is accessed.