Helicopter Bell UH-1H Iroquois Serial 12991 Register 71-20167 used by US Air Force USAF ,US Army Aviation Army. Aircraft history and location Aircraft History 71-20167 US Army Aviation US Army US Air Force Bell TH-1H Iroquois USAF 2005, conv to TH-1H Send Updates Use APP to upload photo @ (optional) When Now? / / Send