As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FOR SI CHECK, MAINTENANCE FOUND CORROSION ON THE RIGHT HORIZONTAL STABILIZER AFT INTERSPAR WEB INBOARD ATTACHING BRACKET INSIDE ACCESS PANEL AREA 9206. MAINTENANCE FABRICATED NEW STIFFENER AND INSTALLED IAW SRM 51-30-2 AND 55-10-1.