As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION WAS FOUND IN A FASTENER HOLE OF THE UPPER ROW COMMON TO THE REAR SPAR UPPER CAP OF THE MLG SUPPORT BEAM O/B AFT FITTING. ANOTHER FASTENER HOLE WAS MISDRILLED WHILE REPLACING THE AFT FITTING. THE FASTENER HOLES WERE OVERSIZED AND BUSHED PER ERA 397386-14 AT HMV.