# SDR USAA2013040800004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 2, 2013
- Submitted: April 10, 2013
- Operation: Air carrier
- Aircraft: [N173US](https://openairdocs.org/aircraft/N173US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1481
- Aircraft time: 42,043 hours, 15,351 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Fitting
- Part number: D53480048000
- Condition: Corroded
- Location: Fuselage
- 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/USAA2013040800004

## Discrepancy

2S CHECK - GALVANIC CORROSION ON CENTER FITTING LOCATED BETWEEN FR 66 TO FR 68 STR 23L (SHAPE, SILL).  REPLACED CENTER FITTING (SHAPE SILL) LOCATED BETWEEN FR 66 TO FR 68, STR 23L IAW A321 SRM A321 51-72-11 PAGE 1-2 AND DRAWING D53480505.

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