What was found
AILERON CAVITY I/B STRUCTURE 20 IN. FWD OF HINGE POINT VERTICAL STIFFENER CRACKED AT LOWER EDGE
- Difficulty date
- September 17, 2025
- Submitted
- September 17, 2025
- Operation
- Air carrier
- Aircraft
- N742CK
- Make and model
- Boeing 747446
- Aircraft serial
- 24424
- Aircraft time
- 124,753 hours, 25,673 cycles
- System (JASC)
- 5710 · Wing Main, Frame Structure
- Part
- Stiffener
- Condition
- Cracked
- Location
- Zone 600
- Stage of operation
- IN
- How discovered
- V
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.