What is the maximum reverse thrust limitation during landing below which speed?

The maximum reverse thrust limitation during landing is typically set to ensure safe aircraft operation and control during the critical phase of landing. The correct answer indicates that this limitation is enforced below a specific speed threshold, which is crucial because deploying reverse thrust at too high of a speed could destabilize the aircraft or lead to excessive wear on the engines and braking system.

In this case, the specified speed of 75 KIAS (Knots Indicated Airspeed) serves as a caution point. By limiting the use of maximum reverse thrust below this speed, pilots are able to maintain better control of the aircraft, allowing for a more stable deceleration and reducing the risk of potential loss of directional control on landing. This speed threshold is particularly important during conditions where runway length and surface conditions may vary.

Other options present higher speed thresholds, which would not be in alignment with the safety protocols established in aviation operating procedures. Thus, the determination of 75 KIAS as the correct speed highlight significant consideration towards maintaining aircraft control and ensuring safe landing operations.