Flat Island Flat Island is a rock located in the Spratly Islands. The Philippines first took possession of the feature in 1974. U.S. Board of Geographic Names: Flat IslandChina: Feixin Dao, 费信岛Philippines: Patag IslandTaiwan: Feixin Dao, 費信島Vietnam: Đảo Bình Nguyên Occupied by: PhilippinesLegal Status: RockGPS: 10° 48' 53" N, 115° 49' 21" E Overview Images January 1, 2018 May 7, 2016 October 29, 2015