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, LEVEL 2 CORROSION WAS FOUND ON THE AFT GALLEY INBOARD SEAT RAIL AT STATION X705 TO X712 & Y-9.250. MAINTENANCE REMOVED & REPLACED THE AFT GALLEY INBOARD SEAT RAIL AT STATION X705 TO X712 & Y-9.250 IAW BOMBARDIER Q400 SRM 53-40-49, 51-40-07, 51-42-05, 51-40-15 & 51-42-35. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.