If the FAA furloughs air traffic controllers and a aircraft filled with passengers sits on the tarmac for 3 or more hours, will have to the Department of Transportation (DOT) ding the provider for violating the government’s three-year-old rule against prolonged tarmac delays?The airline business says “no” and two industry alternate groups — Airlines for The usa (A4A) and the Regional Airline Association (RAA) — have…