As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING LINE CHECK THE RIGHT MAIN CABIN DOOR EMERGENCY ASSIST BOTTLE WAS DISCOVERED TO BE AT ZERO PRESSURE. MAINTENANCE FOUND THE DIAPHRAGM LEAKING DURING ATTEMPTED SERVICING.MAINTENANCE REPLACED THE DIAPHRAGM PER AMM 52-10-00-601-001. LEAK CHECK WAS GOOD AND THE AIRCRAFT RETURNED TO SERVICE.