What was found
CRACKS NOTED AT 727B, LBL 45.5 INBD FLANGE AFT HOLE AND OTBD FLANGE FORWARD AND AFT HOLES, 3 EA. ACFT GROUNDED. REPAIRED MAIN CABIN SEAT TRACK AT BS 727B, LBL45.50 INBD AND OTBD FLANGE IAW EA SB737-53-1296-NG-123 REV NEW AND REO G18740, REV B. THIS IS A CATEGORY A REPAIR, NO FURTHER ACTION REQUIRED.