A woman startled passengers on board a flight in Houston on Monday (local time) when she opened the emergency exit door and jumped out as it was taxiing down the runway.
The United Airlines flight had just landed in Houston and was headed toward its gate at the George Bush Intercontinental Airport when the incident occurred, airline spokeswoman Maddie King told CNN.
"I realised when the door popped open and a woman stepped out of it," said passenger Hampton Friedman. He was sitting across the aisle and posted a short video of the open door.
Emergency services were called to the stationary plane and the woman was detained by police.
She was treated for non-life threatening injuries and released without charge.