High Quality Content by WIKIPEDIA articles! Saidor Airport is an airport in Madang Province, Papua New Guinea. (IATA: SDI). It is a general aviation airport located at the coast near Saidor, near Saul Point with Dekys Bay to the east and the Bismarck Sea to the north.A pre-World War II airfield, after the US Army landing at Saidor on 2 January 1944 to liberate the area from the Japanese, construction of a single runway running roughly ESE to WNW began. Initially, the airfield was only usable by light Liaison planes, later it was expanded to include extensive taxiways and revetments on the north and south side of the runway, and an apron at each edge of the runway.