As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE WORKING TC QA07 PNC, NR 2 ENG FUEL FILTER DIFFERENTIAL PRESSURE SWITCH REPLACEMENT, FOUND FUEL HEATER SERVO LEAKING FROM UPPER SEAM. GROUNDED. REPLACED SERVO FUEL HEATER IAW AMM 73-11-07. SERVO FUEL HEATER INSTALLATION TEST AND LEAK CHECK GOOD REF 71-00-00.