Helicopter Sikorsky S-55 Serial 55-100 Register N412A used by Los Angeles Airways LAA. Built 1952. Aircraft history and location Aircraft History N412A Los Angeles Airways 1952-03-31Sikorsky S-55 c/n 55-100, ff:? del Los Angeles Airways as N412A, 31Mar52. Send Updates Use APP to upload photo @ (optional) When Now? / / Send