NEW : FAA officials , union representatives begin a cross-country tour in Knoxville . NEW : the National Air Traffic Controllers Association Administrator Randy Babbitt says mistakes `` will not be tolerated '' The FAA reported a first case of a controller asleep on the job the weekend . Controllers now must have a minimum of eight hours off between shifts .
NEW : FAA officials , union representatives begin a cross-country tour in Atlanta . NEW : FAA Administrator Randy Babbitt says mistakes `` will not be tolerated '' The FAA reported a seventh case of a controller asleep on the job this year . Controllers now must have a minimum of nine hours off between shifts .