What was found
SEAT TRACK BETWEEN FRAME 53.2 AND 53.4 AT +Y450 IS CORRODED AT LOCATIONS: FR53.2 +230MM AFT, FR53.4, FR53.4 + 210MM AFT. CORROSION REMOVED BY GRINDING AS PER SRM 51-74-00 REV 97. DAMAGE DIMENSIONS: FR53.2 CENTRAL L=5.000" W=1.000" DEPTH=0.022", FR53.4 INNER VERT L=0.375" W=1.000" DEPTH=0.010", FR53.4+210MM CENTRAL L=1.000" W=0.500" DEPTH=0.030" AND ALSO IN INNER VERTICAL AND UNABLE TO MEASURE. ASSESSED AS OUTSIDE OF SRM 53-00-15 REV 97 LIMITS. RII CARRIED OUT AS PER GMM VOL1 CHAP5 - CONSIDERED LEVEL 2 CORROSION, PART REPLACEMENT REQUIRED. SEAT TRACK REPLACED AS PER SRM 51-72-11 REV 97 AND DRAWING F53326973 ISSUE A. JOB COMPLETE.