What was found
PARTIAL SLIDE DEPLOYMENT OF MCD FLIGHT 3972 UPON ARRIVAL TO AIRCRAFT FOUND THAT THE DOOR HAD BEEN OPENED WHILE ARMED AND GIRT BAR WAS PULLED BUT NOT ENOUGH TO FULLY DEPLOY THE SLIDE OR ACTIVATE THE DOOR ASSIST. THE SLIDE DID NOT ACTUALLY PARTIALLY DEPLOY. REMOVED AND REPLACED EMERGENCY EVACUATION SLIDE ASSEMBLY IN REFERENCE TO ERJ 175 25-65-01. AFTER REPLACEMENT REMOVED ALL SAFETY PINS. PLEASE REFERENCE AML 1891599 FOR DOOR ASSIST SAFETY PIN INSTALLATION AND REMOVAL.