As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DOOR 2L BOTTLE PRESSURE IS OUT OF LIMITS. [SUP 05-08-07] THE DOOR 2L ASSIST BOTTLE BEING BELOW LIMITS WAS A REGULAR OCCURRENCE ON THIS AIRCRAFT. AT THE NEXT OCCURRENCE OF THE SAME FAULT, IT WAS DETERMINED THAT THE DOOR DAMPER CYLINDER WAS FAULTY AND IT WAS REPLACED. OVERHAUL OF THE DAMPER CYLINDER FOUND A PUNCTURED DIAPHRAGM, WHICH WAS ALLOWING A SLOW LEAK IN THE SYSTEM AND RESULTED IN THE CHRONIC LOW ASSIST BOTTLE CONDITION.