As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: LEFT HAND FORWARD PASSENGER / CREW DOOR DAMPER AND EMERGENCY OPERATION CYLINDER INDICATES 0 PSI. REPLACED DAMPER AND EMERGENCY OPERATION CYLINDER AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 52-11-14.