What indicates the compatibility of a propeller with an engine?

The compatibility of a propeller with an engine is primarily indicated by the Type Certificate Data Sheets (TCDS). The TCDS provides comprehensive specifications and required performance characteristics for both the engine and the propeller associated with that engine. It includes crucial information such as approved propeller models, their specific limitations, and how they perform when mated to the engine.

When assessing compatibility, it's vital to refer to the TCDS because it ensures that the propeller meets all the necessary airworthiness standards for safe operation with the particular engine, thus promoting safety and performance standards established by the FAA. This document serves as a guideline for maintenance, installation, and replacement, ensuring that any propeller used is compliant with the engine's operational parameters and performance capabilities.

Designations, service bulletins, and operational limits documentation do not provide the same level of authority or comprehensive detail regarding compatibility as the TCDS. Designation numbers may indicate general specifications but lack the necessary context for compatibility verification. Service bulletins may contain updates and advisories but are not definitive compatibility documents, while operational limits documentation typically outlines parameters for safe operation rather than explicitly confirming which propellers are compatible with a particular engine.