What was found
DURING INSPECTION FOUND CORROSION ON PREVIOUS REPAIR AND SKIN OF FWD CARGO COMPARTMENT BTW STA 500C TO 500D ,27 RH STRINGER , 27 LH STRINGER. DOUBLERS WERE FABRICATED PER GOGO DWG. NO.P20196, NOTE 3, AND GOGO DWG. NO.P19754, NOTE 3. AND REPLACED PER B737-900ER SRM 51-40-02-0G.