Reverse idle should be achieved by what speed?

• A. 50 KIAS
• B. 60 KIAS
• C. 70 KIAS
• D. 80 KIAS

Answer: (B)

This question is about when to transition to reverse idle during the landing rollout. Achieving reverse idle around 60 KIAS provides the best balance between enough airflow to keep the thrust-reverser stable and effective, and enough deceleration once you’re on the runway. If you wait until you’re slower than about 60 knots, you risk losing directional control or insufficient reverse thrust. If you engage too early at higher speeds, you can introduce excess drag and control issues. So, 60 KIAS is the recommended point to set reverse idle for a safe, controlled stop.