What was found
FLOORBEAM CORRODED BS 986 LBL 48 TO RBL 48. REMOVED EXISTING UPPER T-CHORD REPAIR PARTS FROM LEFT AND RIGHT SIDES OF 986 BEAM. FABRICATED NEW REPAIR PARTS FOR THE LEFT SIDE USING EXTRUSION BAC1505-101474 T-CHORD, EXTRUSION BAC1490-2811 AND BAC1490-2885 FOR REPAIR ANGLES AND .080" 7075-T6AL FOR STRAP; RIGHT SIDE MATERIALS USED EXTRUSION BAC1490-101474 FOR T-CHORD, BAC14902865 AND BAC1490-2887 REPAIR ANGLES AND .080" 7075-T6AL STRAP IAW B737-800 SRM 53-70-51. FLAP PEENED THE T-CHORD AND REPAIR PARTS AND INSTALLED IAW B737-800 SRM 53-70-51 REPAIR 4.