As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A "C" CHECK INSPECTION, MECHANIC FOUND THAT THE OUTER HANDLE OF THE CREW ESCAPE HATCH WOULD NOT UNLOCK PROPERLY ALLOWING THE HANDLE TO EXTEND AND ROTATE.THE HANDLE WAS REMOVED FROM THE CREW ESCAPE HATCH AND WAS REPLACED WITH A SERVICEABLE UNIT IN ACCORDANCE WITH CRJ STRUCTURE REPAIR MANUAL 51-42-06.