United Air Express flight 4882 had to divert and make an emergency landing at Philadelphia International Airport, Pennsylvania, on April 28.
Airport officials confirmed that the flight, heading from Raleigh-Durham to Newark, was diverted after one of its engines caught fire.
The fire-fighters were ready at the scene when the plane landed uneventfully.
All 75 people aboard were safely evacuated. Authorities said one passenger, having a history of heart problem, was taken to hospital.