What was found
FCB, AFT SUBTHRESHOLD BS 500 TO 500A RBL 25 HAS CORROSION. REMOVED AND REPLACED FCB AFT THRESHOLD BS492 TO BS500A RBL25 WL156 IAW SRM 51-40-02 AND DWG 143A0080 REV: -.
- Difficulty date
- August 25, 2026
- Submitted
- September 29, 2026
- Operation
- Air carrier
- Aircraft
- N8643A
- Make and model
- Boeing 7378H4
- Aircraft serial
- 42524
- Aircraft time
- 39,924 hours, 19,432 cycles
- System (JASC)
- 5320 · Fuselage Miscellaneous Structure
- Part
- Threshold
- 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.