# SDR USAA2011091300004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 12, 2011
- Submitted: September 13, 2011
- Operation: Air carrier
- Aircraft: [N194UW](https://openairdocs.org/aircraft/N194UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 3629
- Aircraft time: 10,734 hours, 3,888 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Unit
- Part number: E21328002
- Part serial: 01100
- Condition: Defective
- Location: Brake System
- Part time: 10,727 hours, 3,885 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2011091300004

## Discrepancy

WHILE INBOUND TO BWI, CAPTAIN REPORTED ALTERNATE BRAKE FAULT AND AFTER CYCLING GEAR, RECEIVED ANTI-SKID 1 FAULT.  AIRCRAFT DIVERTED TO PHL DUE TO RUNWAY LENGTH AND WINDS IN BWI.  AFTER ARRIVAL AT PHL HANGAR, RECEIVED A NOSEWHEEL STEERING MESSAGE.  MAINTENANCE REMOVED AND REPLACED THE ALTERNATE BRAKING CONTROL UNIT (95GG) IAW AIRBUS MAINTENANCE MANUAL 32-43-34 AND ALTERNATE BRAKE DIRECT DRIVE VALVE (97GG) IAW AMM 32-43-35.

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