A US Airways plane bound for Las Vegas hit heavy turbulence Friday, forcing the pilot to land in Pittsburgh, slightly injuring 10 people and terrifying a flight attendant who began crying over the loud speaker.

Flight 623 left Philadelphia and ran into rough air 29,000 feet above Franklin County in south-central Pennsylvania, said Arlene Salac, a spokeswoman for the Federal Aviation Administration.The Boeing 737 was carrying 124 passengers and six crew members, airline spokesman David Castelveter said.