What was found
DURING HEAVY CHECK, MAINTENANCE FOUND PASSENGER CABIN LT HAND O/B SEAT TRACK FR 23-34, HAS CORROSION AT FR 24, GOUGED AT FR 25, CORROSION AT FR 26, GOUGED AT FR 27, CORROSION AT FR. 28, GOUGED AT FR 30. REMOVE AND REPLACE SEAT TRACK WITH NEW P/N 170-67373-009.