As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN INTERCOSTAL BETWEEN STA 294.5-312 LBL 12' UPPER SURFACE CORROSION<[01] REMOVED CORROSION AT MAIN CABIN INTERCOSTAL BETWEEN STA 294.5-312 LBL 12 UPPER SURFACE IAW SRM 51-10-02-0G-0. FOUND EXFOLIATING CORROSION ON MAIN CABIN INTERCOSTAL BETWEEN STA 294.5-312 LBL 12' UPPER SURFACE; FOUND OUT OF LIMITS IAW SRM 53-10-51-1A-1. REMOVED AND REPLACED INTERCOSTAL FROM STA 294.5-312 LBL 12' IAW SRM 51-40-02-0G-0 AND DWG 141A5600.;[02] VERIFIED STEP 1