What is the recommended single engine approach power setting?

In multi-engine aircraft, the recommended single-engine approach power setting often falls around 22 inches of manifold pressure. This setting is designed to provide a balance of power and control when flying at slower speeds during the landing approach phase while maintaining sufficient altitude if one engine loses power.

The 22 inches of manifold pressure allows for a manageable speed and descent rate, facilitating the ability to execute a stable approach and landing. This power setting is sufficient to maintain control of the aircraft with one engine inoperative, while also keeping drag from the other engine's propeller effective if feathered if needed.

In practice, this power setting helps pilots achieve better handling characteristics and is aligned with standard operating procedures for multi-engine approaches, reducing the risk of stalling and providing adequate performance margins.