# SDR DXTA2026032307325

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 19, 2026
- Submitted: March 23, 2026
- Operation: Air carrier
- Aircraft: [N439QS](https://openairdocs.org/aircraft/N439QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500542
- Aircraft time: 5,710 hours, 4,455 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Brake Assy
- Condition: Faulted
- Location: Zone 700
- Stage of operation: TX
- How discovered: O
- Nature of condition: E
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026032307325

## Discrepancy

ON TAXI OUT AT FIRST BRAKE APPLICATION NOTICED SIGNIFICANT BRAKE SHUDDER USING BOTH PEDALS.  ADDITIONAL BRAKE APPLICATIONS ON THE TAXI OUT REVEALED SHUDDER COMING FROM BOTH PEDALS HOWEVER THE RIGHT PEDAL PRODUCED A MUCH MORE SIGNIFICANT SHUDDER.  SERVICED HYDRAULIC RESERVOIR. OPS CHECK GOOD. IAW AMM 32-40-00-870-801A

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