United Airlines Flight 173, registration N8082U, was a Douglas DC-8-61 en route from Stapleton International Airport in Denver to Portland International Airport on December 28, 1978. When the landing gear was lowered, only one of the three green landing gear indicator lights came on. The plane circled in the vicinity of Portland while the crew investigated the problem. After about one hour the plane ran out of fuel and crashed in a suburban Portland neighborhood near NE 158th Avenue and E Burnside Street, killing 10 and seriously injuring 24 of the 189 on board.

• http://en.wikipedia.org/wiki/United Airlines Flight 173