In idle condition, what is the minimum required N1 percentage for flight?

In the T-6 aircraft, the N1 percentage refers to the rotational speed of the first stage of the engine's compressor, which is critical for proper operation and safety during flight. The minimum required N1 percentage in idle condition is specifically designed to ensure that the engine can provide adequate thrust and maintain proper performance while ensuring engine viability during various phases of flight.

For flight operations, a minimum N1 percentage of 61% is established. This threshold ensures that the engine runs efficiently and is capable of responding to power demands while maintaining proper airflow. Running the engine below this N1 percentage in idle could lead to instability and unfavorable operational characteristics, making it a critical parameter for pilots to monitor.

Therefore, 61% is verified as the precise minimum required for the engine to provide reliable performance in flight, which aligns with the operational safety standards defined in the aircraft's flight manual.