What was found
LGA - FLT 4463 - DURING CRUISE, AT 27,000 FEET, THE FIRST OFFICERS WINDOW SHATTERED. AN EMERGENCY WAS DECLARED AND AIRCRAFT CONTINUED TO LGA AND LANDED SAFELY. MAINTENANCE REMOVED AND REPLACED THE FIRST OFFICERS WINDSHIELD IAW EMB MM. OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE. (M)