Helicopter Bell AH-1G Cobra Serial 21100 Register 71-21019 71-21029 used by US Army Aviation Army. Aircraft history and location Aircraft History 71-21029 US Army Aviation US Army Conv AH-1F Bell AH-1F Cobra Conv AH-1F 71-21019 US Army Aviation 1999-09-23 A KMTC Michigan ARNG AH-1F type, noted visiting Selfridge ANG Base as 1-238th AVN Send Updates Use APP to upload photo @ (optional) When Now? / / Send