What was found
MAIN CABIN AFT PRESSURE BULKHEAD SEAL ATTACH INTERCOSTAL IS CORRODED. GROUNDED - YES. REMOVED CORROSION AND FOUND BEYOND ALLOWABLE LIMITS IAW ASA 737-800 SRM 53-80-08-1A-1. ORIGINAL MATERIAL THICKNESS IS 0.020 IN. REMAINING THICKNESS IS 0.016 IN. REMOVED 0.004 IN REMOVED AND REPLACED INTERCOASTAL IAW ASA 737-800 SRM 51-40-12 AND BAC DWG 148A0+33 SH.20 REV: REMOVED AND REINSTALLED 2EA CLIPS AND 1EA PLATE FOR ACCESS IAW ASA 737-800 SRM 51-40-02 BAC DWGS 148A0922 REV- SH 20,21 AND BAC DWG 148A2280 SH 55 REV B REMOVED DOT F585.