What was found
AIRCRAFT 3859, CORROSION ON SUBTHRESHOLD WEB AT FCB BS440 - BS487 RBL28 WL156. MARKED. CORRECTIVE ACTION: REPLACED SUBTHRESHOLD WEB AT FCB BS 440 TO BS 492 RBL 28 WL. 156 IAW B737 SRM 51-40-02 AND BOEING DWG 143A8330. (LP 0832553)
- Difficulty date
- February 27, 2025
- Submitted
- March 3, 2025
- Operation
- Air carrier
- Aircraft
- N859DN
- Make and model
- Boeing 737932ER
- Aircraft serial
- 31970
- Aircraft time
- 28,398 hours, 10,839 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- 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.