Someone sent me a picture of the A340 some arab country was buying that decided to go out and do a full power runup before delivery. They left the flaps up to do the run but to put the take off warning horn out someone pulled the air/ground circuit breaker and the brakes released and they destroyed the aircraft. Could that breaker cause the brakes to fail on the ground in the A320? It is installed to make sure you can land with the brakes on and they won't be locked on touchdown. Does anybody do that?