What was found
(CAN) ON AIRCRAFT ROTATION THE #1 ENGINE TORQUE FELL TO ZERO. THE PILOT SATISFACTORILY COMPLETED A SINGLE ENGINE GO AROUND. GROUND INSPECTION REVEALED A HEAVY FUEL LEAK FROM THE FUEL MANIFOLD DRAIN. THIS WAS THE FIRST FLIGHT AFTER A FUEL NOZZLE CHANGE. IT WAS REPORTED THAT A FUEL LEAK CHECK HAD BEEN CARRIED OUT AFTER THE FUEL NOZZLE CHANGE.