What was found
DURING HEAVY CHECK MAINTENANCE FOUND LT OTBD (SIDEWALL) SEAT TRACK P/N:17067373-009 HAS MULTIPLE SPOTS OF CORROSION. REMOVED AND REPLACED LT O/B LATERAL SEAT TRACK FR 23-34 PER REF SRM 51-40-08, APPLIED TOPCOAT AND CIC ON LT O/B LATERAL SEAT TRACK FR 23-34, REF SRM 51-23-06, CPM 51-25-00. A/C REMAINS IN CHECK.