As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE DOOR ASSIST BOTTLE BLEW DUE TO R-4 DOOR TRIGGER FORK NOT DISENGAGING AND TRIGGER FORK SHEARED AT ROLL PIN, DURING C-CHECK PASSENGER DOOR EMERGENCY MECHANISM OPERATIONAL CHECK. THE R-4 DOOR TRIGGER FORK AND ROLL PIN WERE REPLACED. OPERATIONAL CHECK OF R-4 DOOR EMERGENCY MECHANISM WAS GOOD IAW MM 52-11-32.