What was found
DOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. BOTH UPPER DECK DOOR FLIGHT LOCK ACTUATORS OPERATIONS CHECK NORMAL IAW B747-400 AMM 52-23-00.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DOOR UPPER DECK FLIGHT LOCK CAUTION MESSAGE. BOTH UPPER DECK DOOR FLIGHT LOCK ACTUATORS OPERATIONS CHECK NORMAL IAW B747-400 AMM 52-23-00.