As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING PERIODIC SERVICE CHECK FOUND L1 CYLINDER DOOR DAMPER PACKING DAMAGED AND AT 0 PSI REPLACED FILLING VALVE OF L1 DOOR DAMPER AND EMERGENCY OP. CYLINDER PER AMM 52-10-00 AND SERVICED PER AMM 52-10-00. NO LEAKS FOUND,