What was found
AFT WET AREA 1016 BULKHEAD L/H FLOOR WEB HAS CORROSI ON AS MARKED LBL4 TO LBL9. / REMOVED AND REPLACED FLOOR WEB AT STA 1016; LBL 4-LB L 9 IN AFT WET AREA IAW SRM 51-40-02 AND BOEING DRAW ING 147A5600 REV B; ID 32 REMOVED AND REINSTALLED AP U DUCT IAW SRM 51-40-02 AND AMM 36-13-02-000-807. LE AK CHECKED APU DUCT IAW AMM 36-13-01-000-807. CHECKE D APU DUCT IAW AMM 36-13-01-000-807. NO LEAKS NOTED. ORIGINAL THICKNESS .020' MATERIAL REMOVED .011' MAT ERIAL REMAINING .009' OUT OF LIMITS IAW SRM 53-70-51 -1A-1