As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HMV, EXTENSIVE GRAVEL DAMAGE WAS FOUND ALONG THE BELLY SKIN FROM STA 439 TO STA 660, S-26L TO S-26R EXCEEDING SRM REPAIR LIMITS. SEVERAL AREAS WERE CUT OUT AND REPAIR DOUBLERS INSTALLED WHERE REMAINING SKIN THICKNESS WAS TOO THIN AFTER BLENDING.