# SDR DXTA2023112210116

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2023
- Submitted: November 22, 2023
- Operation: Air carrier
- Aircraft: [N524QS](https://openairdocs.org/aircraft/N524QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0062
- Aircraft time: 6,854 hours, 4,536 cycles
- System (JASC): [3220 · Nose/Tail Landing Gear](https://openairdocs.org/jasc/3220)
- Part: Brake Assy
- Part number: 267519914655
- Part serial: 1452
- Condition: Worn
- Location: Unknown
- Stage of operation: TX
- How discovered: C
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2023112210116

## Discrepancy

NLG: ON TAXI NOSE WHEEL SHIMMY OBSERVED AT LOW AND HIGH TAXI SPEEDS.   RIGHT MLG BRAKE: ON TAXI OUT DOING THE BRAKE CHECK IT WAS OBSERVED THAT THE BRAKES ARE EXTREMELY GRABBY, FURTHER ON TAXI THE RIGHT BRAKE SEEMS TO BE MAKING A SHRILLING/ GRINDING SOUND THAT IS QUIET DISTINCT. SOUNDS LIKE METAL RUBBING ON METAL . SOUND MORE PROMINENT FROM THE RIGHT SIDE .  REMOVED AND REPLACED TORQUE LINK UPPER AND LOWER ATTACH BOLTS.  IAW CE-680A CMM 32-20-02.  REMOVED AND REPLACED THE #3 & #4 BRAKE ASSY. IAW AMM 32-40-05.  OPS CHECK GOOD.

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