What could be observed regarding propeller movement during a flameout?

During a flameout, the propeller's movement towards feathering is due to the loss of oil pressure. In the T-6A, the propeller is designed to maintain its pitch position through the use of oil pressure that acts on the propeller control mechanism. When a flameout occurs, the engine stops producing power, and as a result, oil pressure to the propeller governor decreases.

As the oil pressure drops, the propeller blades will naturally move towards a feathered position. This feathering position reduces drag on the aircraft, which is particularly important for maintaining control and improving glide performance during the emergency situation of an engine failure. Feathering the propeller essentially aligns the blades with the airflow, minimizing resistance and allowing the aircraft to maintain a more favorable glide ratio.

Understanding this phenomenon is crucial for pilots, as it emphasizes the importance of recognizing the signs of a flameout and the need for appropriate emergency procedures to manage the aircraft.