ROMULUS, Mich. (AP) _ A man hid in the electronics bay of a Northwest Airlines flight from New Jersey to Michigan early Friday, and was caught after he jumped from the plane's wheel well at its destination gate.

Authorities were questioning the unidentified man. They said he got into the pressurized bay of Flight 81 in Newark, then flew to Detroit Metropolitan Airport and jumped out near the gate about 8:30 a.m.

Authorities said he appeared to be unhurt.

Northwest spokeswoman Christy Clapp said officials didn't know how the man got on the plane.

There were 47 passengers on the plane, which continued to San Francisco about two hours late, Clapp said from airline offices in Eagan, Minn. The plane was undamaged and no other flights were delayed, she said.

The area where the man rode in is in the belly of the plane, and contains electronic and radio equipment, Clapp said.