During takeoff, Autothrottle HOLD must be displayed prior to which speed?

During takeoff, Autothrottle HOLD must be displayed prior to which speed?

• A. 60 kt
• B. 70 kt
• C. 65 kt
• D. 75 kt

Answer: (C)

Autothrottle HOLD is a safety state that locks the autothrottle to the takeoff thrust so the crew has a stable, known thrust setting during the critical ground roll and early climb. The rule for takeoff is that this HOLD must be visible before you reach a specific speed, so you’re guaranteed that the autothrottle is in the correct mode as you accelerate through the takeoff regime. In this item, that threshold is 65 knots, meaning you should see Autothrottle HOLD displayed prior to reaching 65 knots. Having this indication by that speed ensures the thrust won’t change unexpectedly as you approach rotation and initial climb. The other speeds shown are not the mandated point for this requirement.

Autothrottle HOLD is a safety state that locks the autothrottle to the takeoff thrust so the crew has a stable, known thrust setting during the critical ground roll and early climb. The rule for takeoff is that this HOLD must be visible before you reach a specific speed, so you’re guaranteed that the autothrottle is in the correct mode as you accelerate through the takeoff regime. In this item, that threshold is 65 knots, meaning you should see Autothrottle HOLD displayed prior to reaching 65 knots. Having this indication by that speed ensures the thrust won’t change unexpectedly as you approach rotation and initial climb. The other speeds shown are not the mandated point for this requirement.