What was found
UPON REMOVAL OF AFT POTABLE WATER DRAIN FOUND EXTERIOR FUSE SKIN CORRODED BETWEEN F.S. 605 - F.S. 621 STRINGER 26R - 25R (C-CHECK RO 6/11/2021) REPAIRED FUSE SKIN CORROSION UNDER AFT POTABLE WATER DRAIN AT FS605 - FS621 STGR 26R - 25R IAW MHIRJ REO 601R-53-61-7611 REV-- DATED 2021-04-21. COMPLETED TASK CARD 51-900-1003-SKY AND ATTACHED COMPLETED FORM M-337. WEIGHT CHANGE IS NEGLIGIBLE.