As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LCQ - EES - DURING C-15 CHECK THE FIRST OFFICERS SLIDING WINDOW WOULD NOT OPEN USING THE EXTERNAL EMERGENCY HANDLE. MAINTENANCE REMOVED AND REPLACED THE FIRST OFFICERS SLIDING WINDOW HANDLE SHAFT ASSEMBLY CAM IAW BMM 56-10-02, PG 602, OPERATIONAL CHECK WAS GOOD.