Helicopter Sikorsky CH-3C Serial 61-540 Register 64-14237 used by US Air Force USAF. Built 1965. Aircraft history and location Aircraft History 64-14237 US Air Force 1965-12-15Sikorsky S-61R, c/n 61-540, ff? del USAF as CH-3C 64-14237, 15Dec65 conv CH-3E unk Destroyed S.E.A. 26Feb69. 1968-04-10 Sikorsky CH-3E 10apr68 1969-02-26 Sikorsky CH-3E 21st SOS w/o 26feb69 hit by ground fire in Laos during Igloo White mission 21st SOS Send Updates Use APP to upload photo @ (optional) When Now? / / Send