On a max performance takeoff, what action does the PF perform to set thrust?

On a max performance takeoff, what action does the PF perform to set thrust?

• A. The PF advances the thrust levers setting target to N1
• B. The PF sets thrust to maximum N2
• C. The PF leaves thrust levers at idle
• D. The PF sets thrust to approximately 70% N1

Answer: (A)

In a max performance takeoff, thrust is controlled by targeting a specific N1 value—the engine core speed that directly correlates with thrust. The pilot flying advances the thrust levers to set a target N1, typically by using the TO/GA detent to command maximum takeoff thrust. Once the target N1 is set, the autothrottle drives the engines to reach and hold that level throughout the takeoff roll. This is why setting the target to N1 is the best choice: it directly establishes the thrust level needed for maximum performance, whereas choosing N2, leaving idle, or using a lower percentage like 70% N1 would not provide the intended takeoff thrust.

In a max performance takeoff, thrust is controlled by targeting a specific N1 value—the engine core speed that directly correlates with thrust. The pilot flying advances the thrust levers to set a target N1, typically by using the TO/GA detent to command maximum takeoff thrust. Once the target N1 is set, the autothrottle drives the engines to reach and hold that level throughout the takeoff roll.

This is why setting the target to N1 is the best choice: it directly establishes the thrust level needed for maximum performance, whereas choosing N2, leaving idle, or using a lower percentage like 70% N1 would not provide the intended takeoff thrust.