What percentage represents N1 maximum transient limit?

• A. 103.8%
• B. 100.1-103.2%
• C. 95-101%
• D. 108%

Answer: (A)

The maximum transient limit for N1 is specifically set at 103.8%. This value is crucial because it denotes the maximum allowable speed at which the engine's first-stage rotor can operate during a transient condition, such as during a temporary surge in power or unexpected load changes. Operating within this limit is essential to prevent potential mechanical stress or damage to the engine components, ensuring safe and efficient operation of the aircraft.

Understanding this limit allows pilots to manage engine performance effectively, especially during critical phases of flight when quick adjustments might be necessary. The correct answer reflects the precise limit that pilots and maintenance crews need to be aware of to maintain operational safety and engine integrity.