United Airlines Flight 173  was a Douglas DC-8 en route from Denver to Portland International Airporton December 28, 1978. When the landing gear was lowered, only two of the green landing gear indicator lights came on.The plane circled in the vicinity of Portland while the crew investigated the problem. After about an hour the plane ran out of fuel and crashed in a sparsely populated area near 158th and East Burnside, killing 10 and seriously injuring 24 of the 189 on board the aircraft.

           A United Airlines Douglas DC-8-61, similar to Flight 173