What was found
DURING HEAVY CHECK MAINTENANCE FOUND L1 DOOR FAILED EMERGENCY OPENING OPS TEST. L1 DOOR PNEUMATIC ASSY REPLACED IAW AMM 52-11-51-400-801A
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING HEAVY CHECK MAINTENANCE FOUND L1 DOOR FAILED EMERGENCY OPENING OPS TEST. L1 DOOR PNEUMATIC ASSY REPLACED IAW AMM 52-11-51-400-801A