What was found
CORROSION ON FLOORBEAM AT LBL 9.0 BETWEEN FS 469.00 - FS 597 MULTIPLE LOCATION COMING FROM UNDER SEAT TRACK. REMOVED SEAT RAILS IAW AMM 53-00-49-000-801. CORROSION REMOVED FROM TOP OF FLOORBEAM IN 3 LOCATIONS BETWEEN FS 469 & FS 661.00 LBL9 IAW SRM 51-21-06-001-001-A01, PERFORMED UT THICKNESS INSP OF BLEND AREA IN FLOORBEAMS IAW MAC NDT INSP PROCEDURES UT.3 MINIMUM CATERIAL REMAINING IS AS FOLLOWS; LOCATION JUST ADT OF FS 469.00 IS .017", LOCATION NR3 AT FS581.00 IS 063." IN REF TO STEP 2 ABOVE SUBMIT FINDING TO THD. REMOVED DAMAGED BEAM SECTION AT LBL9 FS 485-565 PREPARED NEW BEAM ASSY AND FABRICATED ALL PARTS IAW REO 670-53-00-029.