# SDR AALA202410236174

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 22, 2024
- Submitted: October 23, 2024
- Operation: Air carrier
- Aircraft: [N839AA](https://openairdocs.org/aircraft/N839AA), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40646
- Aircraft time: 23,643 hours, 2,960 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Structure
- Condition: Corroded
- Location: Zone 200
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202410236174

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION OF LAVATORY 4F-1L LOWER BASE EXTRUSION AT STA 1670 FROM LBL 39.5 TO LBL 102.5. REPAIRED PER EA 357952A.

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