Many confrontations occur when a flight attendant refuses to serve an intoxicated passenger another alcoholic beverage , according to flight attendants . FAA reports more than 100 cases of unruly behavior on planes over past five years . Last month , a man reportedly attached himself to passenger on United Airlines . FBI officials found bad behavior less tolerated on flights after September 11 attacks . Unruly behavior can bring civil fines up to $ 25,000 or criminal charges .
FAA reports more than 100 cases of unruly behavior on planes over past five years . Last month , a man reportedly attached himself to passenger on United Airlines . FBI officials found bad behavior less tolerated on flights after September 11 attacks . Unruly behavior can bring civil fines up to $ 25,000 or criminal charges .