WINDSOR LOCKS, Conn. – This was a pig that truly could not fly.

The pig was ordered off a U.S. Airways plane at Bradley International Airport in Connecticut on Wednesday after crew members determined the animal had become disruptive.

Laura Masvidal, a spokeswoman for U.S. Airways parent American Airlines, said Friday the pig was brought aboard by a passenger as an emotional support animal.

She said both the pig and its owner left the aircraft before it took off.

Jonathan Skolnik, who was also a passenger, told ABC News that the pig – which he estimated to weigh 50 to 70 pounds – was on a leash but began walking back and forth.