# SDR AALA202102019021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 5, 2021
- Submitted: February 1, 2021
- Operation: Air carrier
- Aircraft: [N919US](https://openairdocs.org/aircraft/N919US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6479
- Aircraft time: 18,728 hours, 7,324 cycles
- System (JASC): [5754 · Leading Edge Devices](https://openairdocs.org/jasc/5754)
- Part: Slat
- Part number: D5746093000400
- Condition: Worn
- Location: Zone 500 - Lh Wi
- 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/AALA202102019021

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: FOUND WEAR, MEASURING L= 2.905 INCH, W= 0.786 INCH, ON LOWER SKIN TRAILING EDGE OF SLAT NR 3 ON LEFT WING.  PERFORMED PERMANENT EXTERNAL DOUBLER REPAIR IAW EA 310892 AND A321 SRM 57-44-21-300-006.

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