# SDR AALA201808169008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 8, 2018
- Submitted: August 16, 2018
- Operation: Air carrier
- Aircraft: [N557UW](https://openairdocs.org/aircraft/N557UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5269
- Aircraft time: 20,300 hours, 8,035 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Plate
- Condition: Corroded
- Location: Zone 100
- 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/AALA201808169008

## Discrepancy

CORROSION AT AFT SILL PLATE FORWARD NUT PLATE HOLE LOCATED ON THE AFT INBOARD END OF L4 THRESHOLD.   REPAIRED IAWSRM 53-41-14-300-001 REPAIR PRINCIPLE 7.

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