- Difficulty date
- July 12, 2025
- Submitted
- July 14, 2025
- Operation
- Air carrier
- Make and model
- Boeing 747446
- Aircraft serial
- 24424
- Aircraft time
- 124,015 hours, 25,545 cycles
- Part
- Lock
- Condition
- Faulted
- Location
- Zone 800
- Stage of operation
- CL
- How discovered
- O
- Nature of condition
- J
- 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. TRANSFERRED TO DMI 100259089 IAW MEL 52-23-6-2 CATEGORY C DUE. PLACARDS INSTALLED MAINTENANCE PROCEDURES COMPLIED WITH. 100259106 - PERFORMED ADJUSTMENT TEST OF UPPER DECK FLIGHT LOCK IAW B747-400 AMM 52-23-00. NO DEFECTS NOTED.