What was found
DURING HEAVY MAINTENANCE FOUND FORWARD FLOOR STRUCTURE RT SEAT TRACK FRAME 13-FRAME 14 AND FRAME 19-FRAME 20 HAS CORROSION. REMOVED OLD DOUBLER, ACCOMPLISHED DVI OF SEAT TRACK. FABRICATED NEW DOUBLER, DRILLED, COUNTERSUNK, TREATED AND PRIMED, AND INSTALLED NEW DOUBLER IAW E15-426-01. THIS ITEM HAS BEEN CLASSIFIED AS A LEVEL 2 CORROSION.