What was found
(LOG 1343243) DRAIN TUBE INTERCOSTAL BETWEEN STA 947 AND STA 967 AT LBL50 HAS DEEP CORROSION. REMOVED AND REPLACED DAMAGED INTERCOSTAL P/N 147A5660-21 FS 947- 967 LBL50 IAW B737-900 SRM 51-40-02.
- Difficulty date
- December 9, 2025
- Submitted
- December 12, 2025
- Operation
- Air carrier
- Aircraft
- N878DN
- Make and model
- Boeing 737932ER
- Aircraft serial
- 31989
- Aircraft time
- 27,060 hours, 10,124 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Drain Line
- 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.