The single-engine propeller plane crashed about 4:15 p.m. at New Garden Airport, about 20 miles southwest of Philadelphia in Chester County, Federal Aviation Administration spokesman Jim Peters said.
Peters said the Piper Arrow PA28 had been performing touch-and-go landings, in which a plane touches down on the runway and immediately takes off again.
When he was departing, he struck the left side of the hangar on the last touch-and-go he attempted, Peters said.
The National Transportation Safety Board had been called to the scene to investigate.
The pilot and three passengers were believed to be related, but their names had not been released Sunday evening, Peters said.
keep us updated please
The plane crash in New Garden had two men and two boys. There is a real problem with wind shear and cross gusts at that little airport (you can even feel it on the nearby highway )... my family and I have flown in and out of there a few times in the past in a piper cherokee. The hanger and several vehicles were burnt up. This was just a sad accident.