# SDR AALA202602093580

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 6, 2026
- Submitted: February 9, 2026
- Operation: Air carrier
- Aircraft: [N828AA](https://openairdocs.org/aircraft/N828AA), registered now
- Make and model: Boeing 787-9
- Registry model: [Boeing 787-9](https://openairdocs.org/model/boeing-787-9) (OpenAirDocs)
- Aircraft serial: 40648
- Aircraft time: 35,112 hours, 4,136 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Threshold
- Condition: Corroded
- Location: Zone 900
- Component: Lavatory
- Component part number: B80014A1017
- 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/AALA202602093580

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION UNDER LAVATORY L4F-1L THRESHOLD AT BS 1744 BETWEEN LBL 53 AND LBL 81. REPAIRED THRESHOLD PER EA 371759.

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