# SDR AALA202406177929

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 14, 2024
- Submitted: June 17, 2024
- Operation: Air carrier
- Aircraft: [N109UW](https://openairdocs.org/aircraft/N109UW), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 1065
- Aircraft time: 70,153 hours, 35,297 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Tachometer
- Part number: C20105000
- Part serial: 9886
- Condition: Defective
- Location: Lt Brake
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202406177929

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED THAT THE LEFT BRAKE FELT LIKE IT WOULD GRAB SUDDENLY WITH A JOLT, ENOUGHTO FEEL A SIGNIFICANT THUMP. MAINTENANCE REPLACED THE MAIN LANDING GEAR #1 TACHOMETER AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.

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