# SDR USAA2012091100021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2012
- Submitted: September 12, 2012
- Operation: Air carrier
- Aircraft: [N191UW](https://openairdocs.org/aircraft/N191UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1447
- Aircraft time: 39,993 hours, 14,531 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: O-Ring
- Part number: NAS16128
- Condition: Damaged
- Location: Brake System
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2012091100021

## Discrepancy

FLIGHT ATTENDANT REPORTED A DIRTY SOCK SMELL AND PHYSICAL SYMPTOMS INCLUDING HEADACHE AND THROAT IRRITATION.  OTHER FLIGHT ATTENDANTS LATER REPORTED SIMILAR SYMPTOMS, BUT NO PASSENGERS WERE AFFECTED.  FLIGHT DIVERTED TO BNA AS A PRECAUTION.  MAINTENANCE FOUND HYDRAULIC LEAK AT RIGHT WHEEL WELL BRAKE CONTROL VALVE UNION.  REPLACED DAMAGED O-RING, PERFORMED APU LOAD COMPRESSOR WASH AND ECS DECONTAMINATION.

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