Which document helps determine the proper magnetos installed on an aircraft reciprocating engine?

The Aircraft Engine Specifications document is essential for determining the proper magnetos installed on an aircraft reciprocating engine because it provides detailed technical information regarding the engine's design and components. This document outlines the specific requirements for engine parts, including the type and model of magnetos that are compatible with a particular engine. It serves as a reference for technicians and maintenance personnel to ensure that the correct components are used for proper engine performance and safety.

While the Maintenance Manual and Service Bulletins contain valuable information about maintenance and operational guidelines, they may not specifically list all engine specifications, including the required magnetos. The Pilot Operating Handbook primarily focuses on operating procedures and does not typically include detailed technical specifications about engine components. Therefore, the Aircraft Engine Specifications is the most appropriate source for identifying the correct magnetos for a given aircraft engine.