Helicopter Sikorsky S-55 Serial 55-434 Register CF-HAB used by Pratt and Whitney Canada. Built 1953. Aircraft history and location Aircraft History CF-HAB Pratt and Whitney Canada 1953-05-09Sikorsky S-55 c/n 55-434, ff:? del P&WC as CF-HAB, 09May53. Send Updates Use APP to upload photo @ (optional) When Now? / / Send