What is the maximum application of reverse thrust during landing at airspeeds below 75 KIAS?

The maximum application of reverse thrust during landing at airspeeds below 75 KIAS is not permitted due to safety considerations and the operational limitations of the aircraft. At speeds below this threshold, the aerodynamic characteristics of the aircraft may lead to a loss of control. The use of reverse thrust at high speeds provides significant deceleration, but below 75 KIAS, applying reverse thrust can create an asymmetrical thrust condition which can compromise directional control, especially if the aircraft encounters crosswinds or if there is any asymmetry in reverse thrust application.

It is also important to note that airframe stress and engine response characteristics come into play at lower speeds. Therefore, strict adherence to this limitation is crucial for ensuring a safe landing and maintaining control of the aircraft. Compliance with this protocol helps mitigate risks associated with potential tail strikes or control difficulties during landing roll.