As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK. APU GROUNDING SHUNT BAR WAS FOUND CORRODED AT FRAME 80. MAINTENANCE FABRICATED AND INSTALLED A REPAIR DOUBLER AT FRAME 80 FOR THE GROUNDING BAR MOUNT IAW EC 5310-01544, REV C. ALL WORK ACCOMPLISHED AND WILL BE RELEASED AT THE END OF THE CHECK.