What was found
CORROSION ON STIFFENER COMMON TO BS 1016 BULKHEAD BL 0; ON R/H FLANGE COMMON TO Y CHORD; FWD FASTENER HOLE<[01] VERIFIED APPLICABILITY OF SRM 53-80-08-01-1 FOR IDENTIFICATION AND SRM 53-80-08-1A-1 FOR ALLOWABLE LIMIT.;[02] REMOVED CORROSION FROM BS 1016 BULKHEAD STIFFNER BL-0 ON R/H FLANGE IN AREA OF 1.5' X 0.6' ORIGINAL MATERIAL THICKNESS 0.032' IAW SRM 51-10-02-0G-0;[03] VERIFIED CORRECTIVE ACTIONS STEP 2.;[04] REQUESTED NDI FOR REMAINING THICKNESS ON BS 1016 BULKHEAD STIFFENER BL-0 ON R/H FLANGE ORIGINAL MATERIAL THICKNESS 0.032';[05] NDT UT THICKNESS INSPECTED BLENDED AREA PER 737 NDTM PART 4; 51-00-00; PROC 2; LOWEST READING IS .027'. UNABLE TO MEASURE 100% OF BLENDED AREA DUE TO PROBE INTERFERENCE WITH ADJACENT STRUCTURE AND SUSPECTED CORROSION ON BACKSIDE OF FLANGE.<BR>EQUIP ID ATS2341 DUE 06/23;[06] CORROSION ON STIFFENER COMMON TO BS 1016 BULKHEAD BL 0; ON R/H FLANGE COMMON TO Y CHORD; FWD FASTENER HOLE FOUND TO BE OUT OF LIMITS DUE TO MORE THAN 10% OF MATERIAL LOSS IAW SRM 53-80-08-1A-1;[07] CUT AND REMOVED THE DAMAGED SECTION OF STIFFENER COMMON TO BS 1016 BULKHEAD BL 0; ON R/H FLANGE IAW SRM 51-10-02-0G-0;[08] VERIFIED CORRECTIVE ACTION STEPS 6 AND 7.;[09] REFER TO FAULT TTG8Q00JS23H;[10] VERIFIED MEASUREMENT FIELD AND CORRECTIVE ACTION 9