What was found
FWD CARGO COMPARTMENT R/H Z ANGLE BETWEEN STA 500A AND 500D ABOVE STR 25 R AREA; WL 156.4 TOP SKIN SURFACE HAS 5 EA AREAS OF CORROSION AS MARKED. REMOVED CORROSION ON RIGHT HAND Z-ANGLE STA 500A TO 500D UPPER SURFACE 5 EACH AREAS; USEING 10X MAG NO FURTHER CORROSION FOUND IAW B737 SRM 51-10-02-0G-0; STEP 15; ORIGINAL THICKNESS .040; LOSS OF .003; AT DEEPEST BLEND REMAINING .037 WITHIN LIMITS IAW B737 SRM 53-00-53-1A-2 FIG 103; PG 9 DETIAL A-A USING AAR REMOVED INTERCOSTAL FROM BS 310 TO 328 LBL 45' IAW SRM 51-40-02. NEW INTERCOSTAL P/N PRIMER 141A5410-12 IAW DWG 141A5400 REV - LOCATED AND 4 DRILLED NEW PART AT BS 312 TO 328 LBL 45' IAW DWG 141A5400 REV - AND SRM 51-40-05-0G-0. APPLIE CIC AREA REWORK IAW AMM 51-21-91-620-802.