As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTS 2 PERCENT NG FLUCTUATION WITH CORRESPONDING FLUCTUATION IN TOT AND TQ. REMOVED FUEL CONTROL TO PERFORM FUNCTIONAL CHECK AT TURBOMECA. P/N OFF 0164448160, S/N OFF B.625B. INSTALLED LOANER. P/N ON 0164448330, S/N ON 460B. (X)