When using thrust reversers, the PF reduces them to idle by:

When using thrust reversers, the PF reduces them to idle by:

• A. 60 kt
• B. On touchdown
• C. At 40 kt
• D. After the plane stops

Answer: (A)

Thrust reversers are used to help slow the airplane as it rolls out after landing, but they’re not left at high thrust for the entire deceleration. The proper procedure is to bring the reversers to idle when the airplane has slowed to about 60 knots indicated airspeed. This timing lets reverse thrust contribute significantly to deceleration early in the rollout, while still letting you transition to wheel braking and normal control as speed drops further. Keeping reverse thrust active below ~60 knots isn’t necessary and can lead to excess thrust, more abrupt deceleration, and increased engine wear or control challenges. So the best choice reflects the standard practice of reducing reversers to idle by 60 knots. The other options either suggest applying or maintaining thrust reversers longer than needed (on touchdown, or after stopping) or delaying the transition too long (at 40 knots), which isn’t aligned with typical rollout procedures.

Thrust reversers are used to help slow the airplane as it rolls out after landing, but they’re not left at high thrust for the entire deceleration. The proper procedure is to bring the reversers to idle when the airplane has slowed to about 60 knots indicated airspeed. This timing lets reverse thrust contribute significantly to deceleration early in the rollout, while still letting you transition to wheel braking and normal control as speed drops further. Keeping reverse thrust active below ~60 knots isn’t necessary and can lead to excess thrust, more abrupt deceleration, and increased engine wear or control challenges.

So the best choice reflects the standard practice of reducing reversers to idle by 60 knots. The other options either suggest applying or maintaining thrust reversers longer than needed (on touchdown, or after stopping) or delaying the transition too long (at 40 knots), which isn’t aligned with typical rollout procedures.