What was found
AIRCRAFT IN BASE MAINTENANCE: FOUND CORROSION ON INTERCOSTAL BETWEEN FS 787 AND FS 807 AT STR 21L. REMOVED AND REPLACED INTERCOSTAL PN 146A9403-21 IAW AARD 51-00-05 AND BOEING DWGS 146A9401, AND 146A7550.
- Difficulty date
- July 9, 2026
- Submitted
- September 2, 2026
- Operation
- Air carrier
- Aircraft
- N904AN
- Make and model
- Boeing 737823
- Aircraft serial
- 29506
- Aircraft time
- 71,361 hours, 29,891 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Floor Support
- Part number
- 146A940321
- Condition
- Corroded
- Location
- Zone 200
- 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.