Helicopter Bell UH-1B Iroquois Serial 369 Register 273 used by Republic of Singapore Air Force RSAF. Aircraft history and location Aircraft History For 273 see also has.2 fn 066 mk27 130 as532m1 2383 s-70i 70-5341 273 Republic of Singapore Air Force RSAF Send Updates Use APP to upload photo @ (optional) When Now? / / Send