FONTANA, Calif. (AP) _ A small plane crashed on a residential street Monday, injuring the pilot.

Authorities were investigating whether the pilot stole the plane and tried crash it into a house where his estranged wife was staying.

No one on the ground was hurt and no buildings were damaged. Motorist Rick Cross said he saw a wing coming at him and swerved and narrowly missed getting hit by the plane.

Pilot William Marconda, 22, of Fontana was rescued from the burning wreckage by witnesses, including two Air Force Reserve medical officers who ran to the scene from a restaurant.

The 6:30 a.m. crash came less than three hours after Marconda argued with his estranged wife, threatening to kill her and himself, said police Sgt. Terry Boess.

Authorities were investigating whether Marconda stole the plane from an Apple Valley airport and tried to crash it into the house where his wife was staying, Boess said. Her name was not immediately available, he said.

One of Marconda's rescuers was Sally Duron, a major in the reserves and a nurse at the San Bernardino County Burn Trauma Center.

''The victim was screaming in pain,'' she said. ''He said something to the effect ... 'Would someone please kill me.' We started looking at each other like, 'Why is he saying this?'''

Marconda was taken to Loma Linda University Medical Center, where he was in fair condition with burns on his legs and severe back and neck injuries, said hospital spokesman Dick Schaefer.