As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY DOOR OPENING DEVICE FAILED TO DEPLOY DURING CHECK. CARTRIDGE SHOWS FIRED HOWEVER PENETRATOR FAILED TO PIERCE DIAPHRAGM THUS NOT RELEASE THE CHARGE NITROGEN. AFTER INSPECTION, MANIFOLD ASSY. SHOWS PENETRATOR MADE A DENT ON RUPTURE DISC ONLY.