As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT HORIZ STAB T/E FORMER/WEB CORRODED AROUND NUTPLATES AND WEB FROM REAR SPAR TO 10" AFT OF REAR SPAR AND 54" FROM FUSELAGE. REMOVED CORROSION FOUND OUT OF LIMITS IAW SRM 55-10-00 FIG 101. REMOVED FORMER WEB RIB IAW SRM 51-40-21. RIB FABRICATED ON PCT NR T5/546620 LOCATED AND DRILLING IAW SRM 51-40. INSTALLED NEW RIB IAW SRM 51-40-21 PG 27.