# SDR AALA201701129027

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 10, 2017
- Submitted: January 13, 2017
- Operation: Air carrier
- Aircraft: [N128UW](https://openairdocs.org/aircraft/N128UW), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 4242
- Aircraft time: 19,686 hours, 10,239 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Transducer
- Part number: CZ9284E
- Condition: Faulted
- Location: Brakes
- Stage of operation: AP
- How discovered: 9
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201701129027

## Discrepancy

ON APPROACH, AFTER GEAR EXTENTION, A NORMAL BRAKES FAULT ECAM OCCURRED. HYDRAULIC PRESSURES AND BRAKE PRESSURES WERE NORMAL WITH ALTN BRAKES OPERATE AND ANTI SKID OPERATIVE. AS A PRECAUTION, AN EMERGENCY WAS DECLARED. THE AIRCRAFT LANDED SAFELY WITHOUT FURTHER INCIDENT.  AIRCRAFT GROUNDED.  MAINTENANCE REPLACED SERVO VALVE 18GG AND PRESSURE TRANSDUCER 14GG PER AMM 32-42-21 AND ACCOMPLISHED A SATISFACTORY OPEATIONAL CHECK.

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