What was found
INSPECTION TYPE:C-CK, CORROSION ON SEAT TRACK INBD FLANGE AT STA 560-620, LBL44 AROUND NUT PLATE HOLES. REMOVED CORROSION AT STA 560-620, LBL 44 NUT PLATE HOLES ORIGINAL THICKNESS .085, MATERIAL LOSS .016, WITH .069 REMAINING AT DEEPEST LOCATION IS OUT OF LIMITS IAW SRM 53-00-52-1A1. PERFORMED ALL STEPS OF EO B7 57-5310-40638-C FOR EXTENDED LIMITS FOR CORROSION.