Does 'Before 9/11, it was not unheard of for a commercial aircraft to deviate slightly from its course, or for an FAA controller to lose radio contact with a pilot for a short period of time.' serve to directly refute the premise presented in 'It wasn't unheard of for a commercial aircraft to change their route a bit.'
Before 9/11, it was not unheard of for a commercial aircraft to deviate slightly from its course, or for an FAA controller to lose radio contact with a pilot for a short period of time.###It wasn't unheard of for a commercial aircraft to change their route a bit.