As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
L4 DOOR SLIDE NOT FULLY DEPLOYED DURING ROUTINE CHECK (OPS CHECK - CABIN ESCAPE FACILITIES DEPLOYMENT) ON A6 CHECK, MX REPLACED THE SLIDE. PRELIMINARY FINDING IS THE 410 LB RESTRAINT HAS NOT BEEN SHEARED WHICH CAUSED THE SLIDE NOT DEPLOYED AT LAST STAGE.