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The Swan Island Municipal Airport was a joint civil-military airport that was operational in the Overlook neighborhood of Portland, Oregon. It opened officially in 1927, but the United States Postal Service had been using the field for a year. After the Portland–Columbia Super Airport was completed in the late 1930s, Swan Island Municipal Airport had little use since its runways were too small for newer aircraft and the low altitude made it difficult to land and take-off. It was operational for nearly two decades, but due in part to the advances in aviation, the airport became obsolete soon after its construction. During World War II, the Oregon Shipbuilding Corporation was located at Swan Island and when they became obsolete after the war was over the Port of Portland built a dry dock on the airport site which continues to serve as one of their facilities. ==History== Oakley G. Kelly, the commanding officer at Pearson Airfield in Vancouver, Washington, was one of the first to seriously propose using Swan Island as an airfield. In 1926, the Port of Portland, assisted by the United States Postal Service (USPS), organized a committee to look for a location for a new airport in Portland. The group chose Swan Island which was a peninsula along the Willamette River. Objections over the airport started almost immediately, as postal workers who were using Pearson Airfield claimed Swan Island might flood. A plan was drawn-up to raise the elevation of Swan Island to keep floodwater out. W. L. Thompson spearheaded the commission and was the project's chief engineer. James H. Polhemus was the Port of Portland's general manager and chief engineer at the time. In a proposal to the Port of Portland, the west channel of the Willamette River next to Swan Island would have to be widened, and a dike built to keep high water out. The project extended its timeline in May 1926, forcing the USPS to keep using Pearson Airfield in Vancouver to deliver mail to the city. Most of the accommodations for the USPS at Swan Island Municipal Airport opened in September 1926, but commercial services were sill being readied. The airfield only took-up a fraction of the land on Swan Island. The other areas were cleared and leveled so industrial growth could take place. During its construction, the Port of Portland requested that the Swan Island Municipal Airport be the future site of the Pacific Coast Air Derby, which was approved. Swan Island Municipal Airport officially dedicated in September 1927 by Charles Lindbergh who flew the Spirit of St. Louis onto the airstrip. Although the field was not officially complete, most of the facilities like hangars and landing strips were finished. Adjacent from the airport was Rankin Airfield, which was a private strip owned by a North Portland resident. Upon its completion, the airport cost US$557,073 (US$ adjusted for inflation). The official opener for the Swan Island Municipal Airport came on September 27 during the Pacific Coast Air Derby where six army planes performed for 10,000 paid spectators. A gravel runway was installed in 1928, replacing the old dirt one. In 1929, Varney Air Lines started passenger services between Portland and Boise, Idaho and later that year from Portland to Salt Lake City, Utah and Portland to Pasco, Washington. The Port of Portland and the Portland City Council held meetings in 1935 to investigate a possible renovation of the Swan Island Municipal Airport. They determined that it would not be cost effective to rebuild the airport to accommodate larger aircraft. By 1936, citizens were petitioning the city council to fund a larger airport at a higher elevation. I. E. Oakes, the Works Progress Administration director for Portland announced in 1937 that he would look to secure US$627,781 (US$ adjusted for inflation) in funds from the federal government to build a new runway to accommodate large airlines. However, the federal government condemned the site and offered up funds to build a new airport. After the Portland–Columbia Super Airport was constructed, the Swan Island Municipal Airport still operated, but in a diminished capacity. Flying students were banned from using the airport in their training programs due to the low altitude. The military removed their facilities from the airport and most commercial liners had moved their services to the new airport. During World War II, Swan Island was the location of the Oregon Shipbuilding Corporation where 455 vessels were produced for the United States Military. After the war the obsolete shipyards and the old airstrip were converted into a dry dock for the Port of Portland where they still operate. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Swan Island Municipal Airport」の詳細全文を読む スポンサード リンク
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