The APU provides how much shaft horsepower to drive the MWGB?

The Auxiliary Power Unit (APU) is responsible for providing a specific amount of shaft horsepower to drive the Main Gearbox (MWGB) in many aircraft systems. In the context of this question, the APU is designed to deliver 300 shaft horsepower. This power is critical because it supports various functions of the aircraft, including starting engines and providing electrical power while the aircraft is on the ground.

Understanding the role of the APU in relation to the MWGB is crucial for maintaining operational readiness and functionality of the aircraft. In many airframes, the APU's limitations in horsepower directly influence the performance of the MWGB and the overall aircraft systems powered by it. Therefore, recognizing that the APU provides 300 shaft horsepower helps clarify its importance in auxiliary and emergency operations.