# SDR AALA202601149053

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 22, 2025
- Submitted: January 14, 2026
- Operation: Air carrier
- Aircraft: [N409AA](https://openairdocs.org/aircraft/N409AA), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 9178
- Aircraft time: 20,765 hours, 5,799 cycles
- System (JASC): [5310 · Fuselage Main, Structure](https://openairdocs.org/jasc/5310)
- Part: Door Sill
- Part number: D5348004320701
- 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/AALA202601149053

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: CORROSION ON AFT RIGHT PASSENGER / CREW DOOR CUTOUT LOWER SILL PLATE AT FR 68 AND S23R. REPLACED SILL PLATE PER SRM 51-72-11.

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