What was found
(CAN) AIRCRAFT CAME BACK FROM A NORTH SEA ROTATION, ON GROUND AT PARKING THE ENGINE WAS AT FLIGHT IDLE AND WHEN THE PILOT SELECTED THE GROUND IDLE POSITION THE ENGINE FLAMEOUT. AFTER NUMEROUS START THE ENGINE DID NOT START. TROUBLESHOOTING CARRIED OUT AT CUSTOMER LOCATION, THEY SUSPECT THE FCU TO HAVE VAPOR LOCK AND ALL ATTEMPTS TO PRIME THE FCU AND TO START THE ENGINE FAILED. FCU WAS REPLACED.