A flight from American Airlines on its way to DFW International Airport from Atlanta was held on Saturday morning when a threatening note was discovered on the plane.
Authorities at Atlanta's Hartsfield-Jackson International Airport said in a Twitter post that the patch was found just before the flight departed at around 7am
Passengers were asked to leave the aircraft to be shown at the gate again while Atlanta police conducted a sweep of the plane.
The aircraft was delayed about an hour before the temporary ground stop was lifted.
Authorities say airport operations are back to normal.