Helicopter Sikorsky S-55 Serial 55-785 Register CF-MYW N737A used by PHI Inc. Built 1954. Aircraft history and location Aircraft History N737A PHI Inc 1954-09-01Sikorsky S-55 c/n 55-785, ff:? del PHI as N737A, 01Sep54. CF-MYW - Send Updates Use APP to upload photo @ (optional) When Now? / / Send