As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK INSP FOUND VERTICAL STABILIZER LOWER RIB FLANGE IN CORRESPONDENCE TO THE 3 SPAR FITTINGS, WERE CORRODED BEYOND LIMITS. INSPECTION REF:ZL-324-GVI-10000/553601-DVI-10000 BEYOND LIMITS IAW SRM 57-36-00. DAMAGE WAS SUBMITTED THEN ISSUED S.R.I. DO/TS-2953/11-15435. REPAIR WAS PERFORMED BY TECH SERVICES UNDER W/O 17010, TASK 675. REPAIRS WERE SUBMITTED AND APPROVED UNDER STRUCTURAL REPAIR APPROVAL SHEET (SRAS) D0/TS-2953/11...6641.