As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AFT RIGHT PASSENGER/CREW DOOR EMERGENCY CYLINDER/ACCUMULATOR AT ZERO PSI DURING PERIODIC SERVICE CHECK. MAINTENANCE REPLACED THE PERCUSSION MECHANISM ASSEMBLY IN THE EMERGENCY CYLINDER / ACCUMULATOR PER AMM 52-10-00. A SATISFACTORY LEAK CHECK WAS ACCOMPLISHED.