As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(B16709) FAILED DEPLOY THE L4 DOOR SLIDE DURING A12 CHECK WHEN PERFORMED JOB CARD NR 252400001X (TO DEPLOY THE L4 DOOR SLIDE), MX REPLACED THE L4 DOOR SLIDE. SHOP REPORT THE FAILED REASON IS THE RELEASE ASSY CORRODED, PREVENTION ACTION IS NEEDED TO INCORPORATE THE SB 777 107-25-30.