Which propeller is approved for use exclusively with the O-540-B4B5 engine?

The Sensensich M80BMM propeller is specifically designed and approved for use exclusively with the O-540-B4B5 engine. Each propeller has particular characteristics, such as pitch, diameter, and construction, that may uniquely match the performance requirements of specific engines. In this case, the M80BMM propeller's design aligns with the operational parameters of the O-540-B4B5, ensuring optimal performance and safety.

The other options, while they may be suitable for different engines or applications, do not have the same compatibility specifically with the O-540-B4B5 engine. This highlights the importance of using propellers that are properly matched to their engines to maintain performance, efficiency, and adherence to safety regulations. In aviation maintenance, using the correct propeller for an engine is a crucial aspect of ensuring the airworthiness of an aircraft.