As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE AIRCRAFT WAS IN FOR HEAVY CHECK MAINTENANCE REPORTED LEVEL 2 CORROSION ON THE RIGHT I/B SEAT TRACK BETWEEN STATIONS 19.5 AND 116.0. MAINTENANCE REMOVED & REPALCED THE RIGHT I/B SEAT TRACK IAW BOMBARDIER Q400 SRM 51-40-07, 51-41-00 & 51-42-05. AIRCRAFT IS CURRENTLY STILL OUR OF SERVICE FOR HEAVY CHECK COMPLETION.