What was found
(AIRCRAFT 3718, L/P 0405678) CORROSION ON FITTINGS AT STR- END 2O LH, 21 LH, AND 21 RH STA Y=1011 AT FRONT FACE OF AFT BULKHEAD (BEHIND POTABLE WATER TANK) (W2). (LEVEL CORROSION 2) FITTINGS AT STR-END 2O LH, 21 LH, AND 21 RH WERE REPLACED PER. B737-800 S.R.M. 51-40-02.