> In this case it seems that the 787 engines were reversed before the air/ground sensor had sensed ground and it is a potential problem.
What I don't understand is why does the reverse thrust input from the cockpit even influence the engine control when the air/ground sensor doesn't sense ground? It seems like an obvious lockout mechanism to have in place, if the result is shutting down the engines when the combination occurs.
Then just have a manual air/ground sensor override should that thing fail and you know you're on the ground and require reverse thrust.
What I don't understand is why does the reverse thrust input from the cockpit even influence the engine control when the air/ground sensor doesn't sense ground? It seems like an obvious lockout mechanism to have in place, if the result is shutting down the engines when the combination occurs.
Then just have a manual air/ground sensor override should that thing fail and you know you're on the ground and require reverse thrust.