Helicopter Sikorsky CH-3C Serial 61-505 Register 62-12580 used by US Air Force USAF. Built 1963. Aircraft history and location Aircraft History 62-12580 US Air Force 1963-11-22del USAF as CH-3C 22Nov63 xfer 4950th TW, WPAFB, OH 08Oct75 15Jan79 soc & xfer to USCG. Send Updates Use APP to upload photo @ (optional) When Now? / / Send