What was found
FOUND CENTER WING TANK LOWER SKIN PANEL HAS INTERGRANULAR CORROSION IN THE LEFT UPPER A/C PLENUM BETWEEN STA BS 795 AND 810 BETWEEN LBL 25 AND LBL 35. REMOVED ALL THE CORROSION,FABRICATED AND INSTALLED EXTERNA L REPAIR DOUBLER,2 EA INTERNAL REPAIR DOUBLER,3EA STRAPS AND 3 EA FILLERS IN SKIN PANEL BETWEEN S-3C AND S-5C.ALSO,FLAP PEENED,SPOTTED FACE THE REWORK AREAS, HIGH INTERFERENCE COLD WORKED ALL FASTENERS HOLES,APPLIED BMS 3-23,ALL IAW FEDEX EA 7-5710-95160.