What happens when you place the PCL to cutoff?

When the power control lever (PCL) is placed to cutoff in the T-6A, the primary action that occurs is the engagement of microswitches that activate the feather dump solenoid valve. This action allows for the release of oil pressure from the propeller, causing the blades to feather. Feathering minimizes drag and allows the aircraft to glide more efficiently in case of an engine failure.

This process is critical for safety and engine management, as it helps to maintain control of the aircraft after an engine shutdown. The feathering mechanism involves hydraulic systems that rely on the solenoid valve’s activation, which is why understanding the role of these microswitches is essential for operational effectiveness.

The other choices involve misconceptions about engine operation and propeller behavior under cutoff conditions. For instance, the engine does not accelerate; in fact, it is intentionally reduced to idle or completely shut down. The propeller doesn’t feather immediately without the activation of the solenoid, nor does the engine data monitor reset just because the PCL is moved to cutoff.