As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: LEFT HAND AFT ENTRY DOOR ASSIST BOTTLE PRESSURE AT 0 PSI. MAINTENANCE REMOVED AND REPLACED DIAPHRAGM IN THE PERCUSSION MECHANISM OF THE EMERGENCY OPERATION CYLINDER PER AMM 52-10-00. SERVICED WITH NITROGEN AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK.