Service difficulty report · Warning Message · Boeing 747446

Difficulty date
May 24, 2025
Submitted
May 28, 2025
Operation
Air carrier
Aircraft
N745CK
Make and model
Boeing 747446
Aircraft serial
26361
Aircraft time
100,449 hours, 14,878 cycles
Part
Warning Message
Condition
False Activation
Location
Zone 800
Stage of operation
NR
How discovered
O
Nature of condition
N
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

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.