What was found
FS 1037 - FS 1060 LBL 37 THE PAX EXHAUST INTERCOSTAL 149N7559-1 HAS EXFOLIATION ON UPPER FWD SURFACE INSTALLED PAX EXHAUST INTERCOSTAL OF FS 1037-1060 LBL 37 IAW SRM 51-40-02.
- Difficulty date
- July 3, 2025
- Submitted
- August 1, 2025
- Operation
- Air carrier
- Aircraft
- N407UP
- Make and model
- Boeing 75724APF
- Aircraft serial
- 23729
- Aircraft time
- 38,070 hours, 25,474 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Intercostal
- Part number
- 149N75591
- 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.