When is it not allowed to use thrust reversers in the Falcon 7X?

Thrust reversers are a critical component of jet engines used to aid in deceleration, especially during landing. In the Falcon 7X and similar aircraft, the use of thrust reversers is not allowed during takeoff. Engaging thrust reversers during takeoff can lead to a loss of engine performance and control, which is particularly dangerous because the aircraft must achieve optimal speed and thrust to ensure safe ascent.

The thrust reversers are intended for use primarily after landing when the aircraft has touched down and requires additional braking to slow down effectively. Utilizing them during takeoff would contradict the operational guidelines established to promote safety and performance efficiency in flight operations. Hence, the appropriate times for thrust reverser operation are typically restricted to landing phases and not when the aircraft is in the critical phase of takeoff.