As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CHECK-C MAINT, MEMBRANE WAS CORRODED ON LT SIDE LONGERON 18, STA 660 TO 665. REMOVED CORROSION PER SPM 6-80-01. ALODINED AND PRIMED PER SRM 51-40-3. FABRICATED DOUBLER FROM TWA SN 55-0261. INSTALLED DOUBLER WITH AD RIVETS. SEALED WITH RRC 1422 PER SRM 53-01 PAGE 9 AND SRM 51-20-2.