You are performing an annual inspection on Piper model PA22-150, serial number 22-3401. Which of the following engine/propeller combinations is correct according to the aircraft specifications?

The correct answer reflects the appropriate standards and specifications for the Piper PA22-150. The Piper PA22-150 typically utilizes a Lycoming O-320 series engine, known for its reliability and power output suitable for this aircraft model. Specifically, the Lycoming O-320-A1B engine is a type that provides the necessary performance characteristics.

Additionally, the propeller combination of a Hartzell hub with designated blades is known to pair well with this engine. The HC82XG-6 hub paired with the 7636D-4 blades is engineered to ensure optimal performance, efficiency, and safety within the flight envelope of the PA22-150. This pairing adheres to the manufacturer's specifications, which are crucial for maintaining airworthiness and compliance with regulatory standards.

The other options do not align with the specifications set forth by the manufacturer for this model, highlighting the importance of consulting the aircraft's Type Certificate Data Sheet (TCDS) and other maintenance manuals when determining the correct engine and propeller combinations.