An investigation is underway to determine whether passengers on board a flight from Colorado to San Diego were breaking any rules by performing a "Harlem Shake" dance routine mid-air.
Footage uploaded to YouTube last week showing passengers performing a version of the viral dance craze triggered the Federal Aviation Administration (FAA) investigation, ABC News reports.
The video begins with one masked man dancing alone in the aisle while other passengers ignore him.
In the next shot, the entire planeload of people can be seen wildly dancing to the beat.
One man appears in an Abraham Lincoln mask and another is dressed as a banana.
The routine was organised by members of the Ultimate Frisbee Team from Colorado College.
The video has had more than 430,000 views on YouTube but concerns have been raised that routine posed safety risks.
Student Matt Zelin, who shot the video, told Colorado College student newspaper The Catalyst that he hoped the situation would be resolved.
“I don’t see there being any reason why this should cause any trouble. We asked the staff and they said it was safe," he said.
Aviation experts reportedly believed the dance did not pose safety risks because it was not performed during take-off or landing.
But aviation spokesman Tony Molinero told The Catalyst an investigation was necessary because it is "better to be safe than sorry."
Author: Sylvia Varnham O'Regan. Approving editor: Nick Pearson.