On a rolling takeoff procedure the PF must set thrust within what percent of targeted N1?

On a rolling takeoff procedure the PF must set thrust within what percent of targeted N1?

• A. Within 5% below target N1
• B. Within 5% above target N1
• C. Within 2% below target N1
• D. Within 10% below target N1

Answer: (A)

During a rolling takeoff, you rely on a precise takeoff N1 target to meet the required performance. The pilot flying sets thrust to be within a small margin of that target so the engines spool to the correct level smoothly as the aircraft accelerates. The best practice is to set thrust within 5% below the target N1. This keeps you from overshooting the desired thrust level while still allowing the engines to reach the target N1 promptly as you roll and accelerate. Setting thrust higher would push you above the intended N1, wasting fuel and potentially altering climb performance, and being farther below (like 2% or 10%) would risk not achieving the required takeoff performance.

During a rolling takeoff, you rely on a precise takeoff N1 target to meet the required performance. The pilot flying sets thrust to be within a small margin of that target so the engines spool to the correct level smoothly as the aircraft accelerates. The best practice is to set thrust within 5% below the target N1. This keeps you from overshooting the desired thrust level while still allowing the engines to reach the target N1 promptly as you roll and accelerate. Setting thrust higher would push you above the intended N1, wasting fuel and potentially altering climb performance, and being farther below (like 2% or 10%) would risk not achieving the required takeoff performance.