What was found
FS 1042, LBL 45, PAX AREA OTBD INTERCOSTAL HAS CORROSION ON UPPER OTBD LIP UNDER NUTPLATE. INSTALLED INTERCOSTAL P/N 149N7559-2 SERIAL NUMBER: TAG058576. AT STA 1042 TO STA 1060 LBL 45 PER SRM 51-40-02-0G
- Difficulty date
- April 30, 2026
- Submitted
- May 5, 2026
- Operation
- Air carrier
- Aircraft
- N421UP
- Make and model
- Boeing 75724APF
- Aircraft serial
- 25281
- Aircraft time
- 35,922 hours, 23,455 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Intercostal
- Part number
- 149N75592
- Part serial
- TAG058576
- 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.