# SDR USAA2010092292062

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 21, 2010
- Submitted: September 24, 2010
- Operation: Air carrier
- Aircraft: [N170US](https://openairdocs.org/aircraft/N170US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1462
- Aircraft time: 33,442 hours, 12,093 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Tachometer
- Part number: C20467000
- Condition: Bent
- Location: Brake System
- Stage of operation: LD
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2010092292062

## Discrepancy

FLT 1537 MCO-CLT - BRAKE FAILURE - BRAKES FAILED AFTER LANDING DURING ROLLOUT AT APPROX 90 KTS.  CYCLED ANTI-SKID SWITCH OFF FOR ALTERNATE BRAKES WHICH WORKED FINE.  TURNED ANTI-SKID SWITCH ON FOR STEERING, WHICH ALSO WORKED, AND NORMAL BRAKES OPERATED ON TAXI IN.  MAINTENANCE REPLACED BRAKE SELECTOR VALVE 23GG IAW AIRBUS MAINTENANCE MANUAL 32-42-11-400-001, REPLACED BENT 4 MLG TACHOMETER SHAFT IAW AMM 32-42-57, AND REPLACED BRAKE STEERING CONTROL UNIT (BSCU) IAW AMM 32-42-34.

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