As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 5L SLIDE DEPLOYED DURING CONDITIONAL CHECK OF DOOR. BUSTLE REMOVED AND SLIDE WAS LOOSE, FELL TO FLOOR AND DEPLOYED INSIDE OF CABIN. *S/D* CENTER RELEASE MECHANISM WAS TRIGGERED DURING MAINTENANCE INSPECTION. SLIDE BUSTLE WAS REMOVED AND SLIDE DEPLOYED. REMOVED AND REPLACED SLIDE (PN: 7A1469-13).