As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
**WHILE IN HEAVY CHECK** MAINTENANCE FOUND LEVEL 2 CORROSION IN A FEW LOCATIONS ON THE RH INBD (FLOOR) SEAT-TRACK FR 34/43 THRU 59/74 (P/N 170-99451-003). MAINTENANCE REMOVED AND REPLACED RH INBD (FLOOR) SEAT-TRACK FR 34/43 THRU 59/74 PER SRM 51-40-08. SEE EAMS W/O H6948 SN 00506. AIRCRAFT REMAINS IN HEAVY CHECK DURING THE DURATION OF THE CHECK.