Which document outlines procedures for engine installation not on the aircraft type certificate?

The engine manufacturer's maintenance manual is the correct resource for outlining procedures for engine installation that may not be specified in the aircraft type certificate. This manual provides detailed instructions specific to the engine's design and operational requirements. It includes important information on installation protocols, maintenance practices, and safety precautions that are tailored to the specific engine model.

The operating limitations manual, while useful, typically focuses on the operational limits of the aircraft rather than detailed installation procedures. The parts manual primarily lists components and their specifications, but does not provide installation guidance. Flight operational handbooks concentrate on performance and operational procedures in flight, which does not encompass installation protocols for engines. Therefore, the engine manufacturer's maintenance manual is the most relevant document for this context.