Troutdale Airport , also known as Troutdale-Portland Airport, is a corporate, general aviation and flight-training airport serving the city of Troutdale, in Multnomah County, Oregon, United States. It is one of four airports in the Portland metropolitan area owned and operated by the Port of Portland. Troutdale Airport was established in 1920 as a private airfield, then purchased by the Port of Portland in 1942. It serves as a reliever airport for nearby Portland International Airport (PDX). Located in North Troutdale, and east of Portland, and south of Troutdale Reynolds Industrial park. Northeast of Fairview and Wood Village, and East of Interlachen and North Gresham. The airport includes a Federal Aviation Administration contract control tower, one paved runway, hangars, fueling facilities, a helipad, and a small passenger terminal. Troutdale Airport is often referred to by its IATA airport code, TTD. Operations Located in Portland's eastern Multnomah County suburbs, Troutdale Airport is connected to the metropolitan area by TriMet buses. The primary public access point is NW Frontage Road, on the south side of the airport. Facilities include a runway (Rwy 07/25 - 5400' x 150'), Taxiway (Twys A, B - 50' wide) and a FAA control tower, hangars, fueling facilities, a helipad, and a small main passenger terminal. The main terminal includes airport offices, and a waiting area. The airport was purchased by the Port of Portland in 1942, and is serving as a reliever airport for nearby Portland International Airport (PDX). It has been developed to support all forms of general aviation and is home to four fixed-base operator (FBO), several limited FBOs, flight schools, and aircraft repair and maintenance facilities. It is also a popular base for scenic aerial tours of the Columbia River Gorge provided by Envi Adventures and recreational flying. Training Gorge Winds Aviation Joe Echo-Hawk Hillsboro Heli Academy Services Northwest Aero Troutdale Aircraft Services TTD Hangars Premier Aircraft Engines Emerald Aircrafters Hillsboro Aviation Treetop Aviation T-Hangers Airlines Facilities and aircraft Portland–Troutdale Airport covers an area of at an elevation of above mean sea level. It has one runway designated 7/25 with an asphalt surface measuring , Weight Bearing Capacity (Rwy 7/25, Twys A, B - 19,000 lbs.) Accidents and incidents On August 12, 1962, at about 4 am, United Air Lines Flight 861, a scheduled flight from Chicago to Portland, inadvertently landed at Troutdale airport. As the plane broke from cloud cover, Captain S.R. Whipple,