As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS NOT GROUNDED: DURING PS CHECK FOUND R1 DOOR FILLING VALVE OF THE DOOR DAMPER AND EMERGENCY OPERATION CYLINDER LEAKING NITROGEN AT BASE OF SCHRADER VALVE. MAINTENANCE REPLACED SCHRADER VALVE AND O-RING ON R1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER IAW AMM 52-10-00.