What was found
CORROSION ON FWD CARGO DOOR CUT-OUT SUB-THRESHOLD WEB FROM 440+7 TO 480+5; RBL 27 TO RBL 29; WL 156. REMOVED AND REPLACED NEW SUB THRESHOLD WEB FCB RBL 27 WL156 IAW SRM 51-40-02 AND DWG 143A8122 REV. D.
- Difficulty date
- April 15, 2026
- Submitted
- May 12, 2026
- Operation
- Air carrier
- Aircraft
- N8639B
- Make and model
- Boeing 7378H4
- Aircraft serial
- 60086
- Aircraft time
- 39,504 hours, 19,287 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Threshold Web
- Condition
- Corroded
- Location
- Zone 100
- 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.