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 HORIZONTAL STABILIZER RIGHT INBOARD CLOSURE WEB INSIDE ACCESS PANEL 9205 AREA AT UPPER END OF WEB WHERE AFT INTERSPAR WEB ATTACHING BRACKET IS MOUNTED. MAINTENANCE FABRICATED NEW STIFFENER AND INSTALLED IAW SRM 51-30-2 AND 55-10-1.