Helicopter Bell UH-1H Iroquois Serial 13891 Register 224 used by Republic of Singapore Air Force RSAF. Aircraft history and location Aircraft History For 224 see also th-67a 5261 mi-171sh 171S00071913008U 369d 0669 w/o 1991 MD530G 0224FF 1962 ab204b 3020 w/o 1969 224 Republic of Singapore Air Force RSAF Send Updates Use APP to upload photo @ (optional) When Now? / / Send