As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) LH MAIN LANDING GEAR DOWNLOCK SWITCH FAULTY - FAILED INSULATION TEST IAW SB/110/32-0052 REV3 - INVESTIGATION FOUND THAT THE SWITCH HAD BEEN WIRED DIRECTLY INTO THE LOOM INSTEAD OF THROUGH THE PLUG - THE WIRING SPLICES HAD EVENTUALLY CORRODED CAUSING CRACKING - PERSONNEL/MAINTENANCE ERROR