What was found
REF LP 61173376, TRACK SECURING LOCK ASSY. IS DAMAGED AND IS MISSING PIECES SO LOCK ASSY. CANNOT BE SECURED. SECOND TH THE LEFT LOCK ASSY. REMOVED BETWEEN POSITION 1 AND 2. TRACK ASSY. REQUIRES REPAIR OR REPLACEMENT. DAMAGED TRACK IS 1 INCH LONG. GROUNDED - YES. ACCOMPLISHED CATEGORY 'A' MAJOR REPAIR BY REMOVING AND REPLACING UPPER MAIN CARGO DECK FLOOR SEAT TRACK BETWEEN STA 360-480 LBL 24.75 P/N 143A5310-33 IAW DWG 143A5300, 143A5310 AND B737-700 SRM 51-40-02-0G-0. THIS CLEARS MCT DEFERRAL, SEAMC CHRIS NOTIFIED. SRXR430X.