Those on board were taken to a hospital, officials said, and three of them were transported to a burn center. Radio transmissions indicated the pilot reported an “open door” just before the crash.

Two patients were flown to the Lehigh Valley Health Network’s burn center and a third was driven there by ambulance, according to a spokesman for Lancaster General Hospital, where all five occupants were taken immediately after the crash. The other two patients were released Sunday night from Lancaster General, he said in an email.