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 LT ENGINE, INBOARD FORWARD SPLINE COWL CLEAT IS CRACKED. MAINTENANCE REMOVED AND REPLACED THE INBOARD SPLINE COWL CLEAT IAW BOMBARDIER Q400 SRM 51-41-00-00-01 & 51-42-05-02-01. AIRCRAFT IS CURRENTLY STILL OUT OF SERVICE FOR HEAVY CHECK COMPLETION.