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 THE FLIGHT COMPARTMENT ESCAPE HATCH HAS BIG GOUGE ON OUTER STRUCTURE. MAINTENANCE PERFORMED A MAJOR REPAIR IAW BOMBARDIER EO: DASH8-Q400-52-I00097. FABRICATED DOUBLER FROM .040 2024-T3 MATERIAL. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.