What was found
FORWARD LAV OUTSIDE DOUBLER EVIDENCE OF CORROSION. EVALUATED 2 EA AREAS OF CORROSION DAMAGE ON LAV SERVICE PORT INTERNAL DOUBLER, PN 85307789-101, AREA 1 IS LOCATED AT AFT EDGE OF PORT 3.750 ABOVE THE LOWER EDGE, AREA 1 HAS EXFOLIATION DAMAGE 0.053 D AND 0.500 L, 0.500 W. AREA 2 IS LOCATED 3.00" FROM AFT LOWER CORNER GOING FWD. AREA 2 HAS EXFOLIATION DAMAGE .039 D AND 1.500 L .500 W. BOTH LOCATIONS HAS DAMAGE THAT ARE BEYOND ACCEPTABLE LIMITS MAKING THE INTERNAL DOUBLER OUT OF LIMITS. REF DWG 85307789, REV-DETAIL-101. PERFORMED BLEND OF EXTERNAL DOUBLER. ORIGINAL MATERIAL THICKNESS .063" MATERIAL THICKNESS AFTER BLEND .036 TOTAL MATERIAL LOSS .027". BLEND OUT OF LIMITS, REF DWG 85307796, REV-- DETAIL-101 AND SRM 51-21-00. EXTERNAL DOUBLER REMOVED REF SRM 51-42-05-02-01, PN 85307796-101. INSTALLED NEW EXTERNAL DOUBLER 80 PERCENT RIVETED, REF SRM 51-2-05, PN 85307796-101 & DWG 85327507. INTERNAL DOUBLER PN 85307789-101 REMOVED IAW SRM 51-42-05-02-01. INSTALLED NEW INTERNAL DOUBLER 80 PERCENT RIVETED REF SRM 51-42-05, PN 85307789-101 AND DWG 85327507. CLARIFICATION STATEMENT OF ITEM 2. CORROSION OF EXTERNAL DOUBLER OUT OF LIMITS DUE TO NO REPAIRS ALLOWED REF SRM 52-42-10, FIGURE 1, ITEM 2. LOCATED AND DRILLED FWD LAV OUTER DOUBLER REF SRM 51-40-07. INSTALLED INNER AND OUTER DOUBLER REF SRM 51-42-05-02-01. FILLET SEALED INNER AND OUTER DOUBLERS REF SRM 51-23-00. RESTORED FINISH REF SRM 51-25-15.