What is the maximum speed for operating reverse thrust on the CRJ 900?

The maximum speed for operating reverse thrust on the CRJ 900 is indeed 60 knots. This limitation is critical to ensure the safe operation of the aircraft during landing and rollout phases. Reverse thrust is utilized to decelerate the aircraft after touchdown, and exceeding the specified speed can lead to uncontrolled directional changes or excessive stress on the airframe, landing gear, and engines.

By restricting reverse thrust operation to below 60 knots, the flight crew is able to maintain better control and stability of the aircraft. Knowing this limitation not only aids in adhering to safe operational practices but also helps in understanding the design parameters and safety features of the CRJ 900, thus ensuring the safety of both passengers and crew during landings.