As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING A SCHEDULED SLIDE CHANGE FOT THE L4 DOOR THE REPLACEMENT SLIDE FAILED THE ARMED INDICATION CHECK IN THE FLIGHT DECK. MAINTENANCE REPLACED THE BAD FROM STOCK SLIDE WITH A SERVICEABLE UNIT AND ROUTED THE DEFECTIVE SLIDE TO BE REPAIRED.