What was found
SEAT TRACK BETWEEN FRAME 53.2 AND 53.5 AT +Y450 IS CORRODED AT LOCATIONS: FR53.2+8", FR53.3+17", FR53.4+0", FR53.4+7". CORROSION REMOVED IAW SRM 51-74-00 REV 97. DAMAGE DIMENSION: AT FR53.2 + 8", FR53.3 + 17", FR53.4 + 0" AND FR53.4 + 7" LOCATED ON SEAT TRACK INNER VERTICAL AREA. UNABLE TO SUFFICIENTLY REMOVE CORROSION AND ESTABLISH REMAINING THICKNESS. CONFIRMED AS LEVEL 2 CORROSION, PART REPLACEMENT REQUIRED. SEAT TRACK REPLACED IAW SRM 51-72-11 REV 97 AND DWG F5332901720400.