What was found
DURING CHECK-C MAINT, FOUND APPROX 200 RIVETS WITH STAGE 2 CORROSION ON TOP OF THE LEFT WING UNDER THE ICE DETECTION STRIPE, STA 341.5 THRU 425.5. *S/D* CORROSION WAS REMOVED BY BLENDING PER SRM 57-30-1 FIG 6, AT A 10:1 REMOVAL RATIO. ALL BLEND OUT AREAS WERE MEASURED AND INFORMATION GIVEN TO BOEING ENGINEERING. A BOEING TEAM ACCOMPLISHED FASTENER REMOVAL AND INSTALLATION OF 120 FASTENERS WITH MATERIAL REMOVED GREATER THAN 0.020 INCHES. THE DAMAGED BACR15FH8* RIVETS WERE REPLACED WITH BACB30NY8K*Y HI-LOKS. TWA MAINTENANCE RESTORED THE AREA TO THE ORIGINAL PROTECTIVE FINISH PER SRM 57-30-1, FIGURE 6.