Helicopter Sikorsky HH-53C Super Jolly Serial 65-389 Register 73-1651 used by US Air Force USAF. Built 1974. Aircraft history and location Aircraft History 73-1651 US Air Force USAF conv HH-53H 20th SOS w/o May 1986 or 1988 impacted ridgeline near Nellis AFB, Nevada. 1 killed 20th SOS 1986-05-21 crash date 21may86 Send Updates Use APP to upload photo @ (optional) When Now? / / Send