Service difficulty report · Warning Light · Boeing 747446

Difficulty date
September 25, 2025
Submitted
September 26, 2025
Operation
Air carrier
Aircraft
N742CK
Make and model
Boeing 747446
Aircraft serial
24424
Aircraft time
124,853 hours, 25,691 cycles
Part
Warning Light
Condition
False Activation
Location
Zone 200
Stage of operation
CL
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. PERFORMED FLIGHT LOCK ACTUATOR OPS TEST IAW AMM 52-23-00. OPS TESTED GOOD. NO DEFECTS NOTED.