Helicopter Bell TH-1F Iroquois Serial 7304 Register 66-1228 used by US Air Force USAF. Aircraft history and location Aircraft History 66-1228 US Air Force conv UH-1P. wfu 1987. to civ as N40495 (australia) Not sure it is accurate wrt saying 228 was converted to a P model. It came off the line as a TH1F, and retired the same in 1987 Send Updates Use APP to upload photo @ (optional) When Now? / / Send