# SDR YENA20120512494

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2012
- Submitted: May 14, 2012
- Operation: Air carrier
- Aircraft: [N623JB](https://openairdocs.org/aircraft/N623JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2504
- Aircraft time: 28,040 hours, 9,649 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Tachometer
- Part number: C201050002
- Part serial: 52870
- Condition: Failed
- Location: Brake System
- Part time: 28,048 hours, 9,648 cycles
- Stage of operation: LD
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA20120512494

## Discrepancy

FLT 705 JFK-SJU, CREW DECLARED EMERGENCY DUE TO BRAKES AUTO BRAKES FAULT ECAM WHEN LANDING GEAR WAS EXTENDED.  REMOVED AND REPLACED TACHOMETER (20GG) IAW AMM 32-42-57.  PERFORMED OPS CHECK PER AMM 34-42-00-720-003A.  OPS CHECK NORMAL.

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