What was found
CORROSION BETWEEN STATION 544 - 566 LBL45 AT BALL MAT NUTPLATE ATTACH POINT. REMOVED CORROSION IAW SRM 51-10-00, REPAIRED AREA AT LBL 45 BETWEEN 544 - 566 IAW SRM 51-70-11. CORRODED LEVEL 2, PN 143T5021, PART NAME INTERCOSTAL, SN NSN, FS & BS LOC FROM 544 TO 566. ACFT WAS GNDED.