Matches in DBpedia 2014 for { ?s ?p 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.. }
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- Swan_Island_Municipal_Airport comment "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.".