As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED ROUGH RUNNING RT ENGINE IN FLIGHT WITH HIGH PRESSURE BOOST PUMP SELECTED ON. PILOT STATED (WITH BOOST PUMP ON ENGINE WANTED TO QUITE RUNNING. WHEN PUMP OFF ENGINE RAN NORMALLY. TROUBLESHOT FOUND THAT WITH DECK REFERENCE LINE REMOVED FROM PUMP AND BOOST PUMP ON FUEL STREAMED FROM PUMP AT DECK REFERENCE FITTING. PART OF AD 91-08-07 ADDRESSED THIS PROBLEM. RECOMMEND A LEAK CHECK ON THESE PUMPS AT 100 HOUR INSPECTION.