For accurate reference regarding propeller suitability, which document is prioritized?

The document that is prioritized for accurate reference regarding propeller suitability is the Aircraft Specifications. This is because Aircraft Specifications provide detailed and specific information on the design and performance characteristics of the aircraft, including the requirements and limitations of the propellers that can be used. These specifications outline the approved propeller types, their sizes, and any performance standards necessary for safe operation, ensuring that the propeller is well-suited for the particular aircraft model.

In contrast, operational manuals focus on the procedures and operational guidelines for flying and maintaining the aircraft rather than providing specific technical specifications. General aviation regulations set forth the broader legal framework within which aircraft operate but do not detail every aspect of propeller suitability. Technical bulletins can provide updates and advisories on equipment but do not serve as the foundational criteria to determine propeller compatibility with an aircraft as thoroughly as the Aircraft Specifications do.