As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE LOST POWER IN FLIGHT. PILOT REPORTED THAT FUEL FLOW WAS ERRATIC AND THAT NR 1 BECAME LIMITED TO 40 PERCENT. WHEN TROUBLESHOT, THE FAULT WAS TRACED TO THE FUNCTION OF THE FUEL CONTROL UNIT. A REPLACEMENT FUEL CONTROL UNIT WAS INSTALLED AND THE DEFECTIVE UNIT WAS SENT FOR TEARDOWN EVALUATION AND OVERHAUL.