A US Airways plane has blown a tyre during take-off from Philadelphia's airport, though officials have reported no serious injuries.
The airline said the pilot of Flight 1702 aborted takeoff for Fort Lauderdale on Thursday due to the tyre problem.
"Passengers were safely evacuated & we are reaccommodating passengers on a new aircraft, scheduled to depart later this evening," US Airways said on its Twitter account.
CNN reported that one person aboard suffered minor injuries.
A witness sitting in an airport terminal reported on the online travel blog flyertalk.com seeing the plane "bounce twice on takeoff."
"Front gear collapsed, sparks on the runway, it then skid out of my line of sight. Light white smoke visible for about 7-10 min afterwards," added the user, writing under the handle phlwookie.
Images posted on Twitter showed the plane's nose to the ground though the aircraft remained upright. The emergency slides were deployed.
"So my plane just crashed," passenger Hannah Udren wrote on the social media platform. "I almost just died."
A photo by Will Jager posted by Twitter user Charles Davis showed passengers on the ground taking pictures of the pitched plane and selfies with the aircraft in the background.
Philadelphia International Airport authorities, also using Twitter, said: "Nose gear of plane collapsed on runway. The incident is under investigation. All passengers safely evacuated. No reported injuries.
"A big KUDOS to our emergency response team who responded to the aircraft emergency tonight for getting all our passengers evacuated safely!" it added.
The airport said the incident caused delays of up to two hours for passengers of other flights.
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