What was found
(CAN) DURING LEVEL FLIGHT AT FL 140, THE NR 1 ENGINE LOW FUEL PRESSURE WARNING LIGHT ILLUMINATED FOLLOWED BY AN AUDIBLE ENGINE SHUTDOWN. THE AIRCRAFT DIVERTED AND AN UNEVENTFUL LANDING WAS CARRIED OUT. POST-FLIGHT INVESTIGATION FOUND A PROBLEM WITH THE HYDRO MECHANICAL FUEL CONTROL UNIT. THE UNIT WAS REPLACED AND CHECKED SERVICEBLE. THE AIRCRAFT WAS RETURNED TO SERVICE.