Helicopter Sikorsky CH-53D Sea Stallion Serial 65-306 Register 157730 used by US Marine Corps USMC. Aircraft history and location Aircraft History 157730 US Marine Corps Sikorsky S-65C, c/n 65-306, ff:? del USMC as CH-53D 157730, unk w/o 2aug79 Send Updates Use APP to upload photo @ (optional) When Now? / / Send