Helicopter Bell TH-1L Iroquois Serial 6426 Register CS-HBV N540GH 157831 used by US Navy USN. Aircraft history and location Aircraft History 157831 US Navy wfu 1983. to civ as N434RR N540AH N540GH CS-HBV N540GH - canc Jul91 CS-HBV - Portugal Send Updates Use APP to upload photo @ (optional) When Now? / / Send