As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 1 TANK AT WS 686.50 REPAIR DOUBLER CRACKED THROUGH AT LOWER CHORD. REMOVED DOUBLER, CRACK ON RIB, PREVIOUSLY STOP DRILLED. HFEC CONFIRMS CRACK CONTAINED BY ORIGINAL STOP HOLES. FABRICATED NEW DOUBLER AND INSTALLED PER SRM 57-10-5. (M)