As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DISASSEMBLY TO CHANGE NLG BISCUITS FOUND CORROSION INSIDE FITTING WHICH GOES UP THROUGH BISCUIT. MLG OK. RUST HAS PENETRATED THROUGH OVER ONE-HALF OF TUBE WELL. THIS TUBE WAS WET WITH MOISTURE AND HAD A RUSTY PASTE. NEW PART WAS UNPAINTED INSIDE TUBE. SUBMITTER RECOMMENDS PERIODIC INSPECTION AND PERIODIC APPLICATION OF LINSEED OIL. EST PART TIS: 4,850.0 HRS, 27 YEARS.