As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSTALLATION OF OXYGEN SYSTEM, OBSERVED INBD END OF LEFT LANDING GEAR UPLOCK CABLE SEVERELY FRAYED AT THE TERMINAL END WHERE IT EXITS THE HOUSING: SUBMITTER SUSPECTS OLD AGE AND LACK OF LUBRICATION. SUBMITTER RECOMMENDS FREQUENT INSPECTION OF BOTH MLG UPLOCK CABLES AND PREVENTATIVE LUBRICATION EACH 100 HOURS.