A small plane crashed into a hangar at Fallbrook Airpark, seriously injuring the pilot of the plane on Sunday.
Firefighters responded to the call at the airport on South Mission Road around 8:45 a.m.
A passerby reported finding the plane crashed, and the pilot lying on the ground next to the plane with major injuries, according to a news release from the San Diego County Sheriff's Department.
The 45-year-old Oceanside man flying the plane was transported via air ambulance to Palomar Hospital while crews contained fuel leaking from the wreckage.
The man lost control of the plane while taking off approximately 100 yards away from the runway, when it crashed into the hanger, North County Fire Department authorities said.
The plane was a World War II era, single-seat, single engine plane, a pilot told the Sheriff's Department.
The condition of the pilot is not known at this time. No one on the ground was injured.