# SDR AALA202504212449

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 20, 2025
- Submitted: April 21, 2025
- Operation: Air carrier
- Aircraft: [N122US](https://openairdocs.org/aircraft/N122US), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 1298
- Aircraft time: 68,451 hours, 34,522 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Tachometer
- Part number: C20105000
- Part serial: 10603
- Condition: Faulted
- Location: Zone 700
- Part time: 63,763 hours, 37,929 cycles
- Stage of operation: CL
- 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/AALA202504212449

## Discrepancy

AIRCRAFT WAS GROUNDED: BRAKES AUTO BRAKES FAULT ECAM AFTER TAKE OFF AND PRIOR TO ACCELERATION ALTITUDE/THRUST REDUCTION. PERFORMED TSM TASK 32-42-00-810-815-A. MAINTENANCE REPLACED #4 MLG TACHOMETER-DRIVE, PER AMM 32-42-68.

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