As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED C-11 CHECK WHILE PERFORMING NR 2153, DURING THE PEELING UP OF THE LT HORIZONTAL STABILIZER'S FRONT SPAR WEB, FOUND BULKHEAD STIFFENER HAD EXFOLIATION CORROSION AT FS 1075, HSS180. REPAIR BY REPLACEMENT ACCOMPLISHED IAW SMP583 CHAPTER 51-60 AND 51-70.