What was found
(AIRCRAFT NOT GROUNDED) (DISCREPANCY NOTED DURING AIRCRAFT HEAVY MX VISIT) NRC 1000-0059: (274-3) PASSENGER CABIN FLOOR STRUCTURE, BTWN FR12-FR18, AT Y1292, CORROSION FOUND ON SEAT TRACK. / PASSENGER CABIN FLOOR STRUCTURE, BTWN FR 12-FR 18, AT Y1292, SEAT TRACK REPLACED AS PER SRM 51-42-11, REV 154, MATERIAL USED: TRACK P/N D5311281300251, P/O 4351138, NUT PIN ASNA2529-3. P/O 2089523, BOLT P/N EN6115V3-7, P/O 4346570, WASHER P/N ASNA2397-6L, P/O 165580, MS21042-06, P/O 4323550, SCREW PIN MNAS1100-06-8, P/O 2048196, SEALANT P/N PRC870 C12, P/O 4335201."