# SDR DXTA2024101100796

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2024
- Submitted: October 11, 2024
- Operation: Air carrier
- Aircraft: [N436QS](https://openairdocs.org/aircraft/N436QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500525
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Unit
- Part number: DAP0010011
- Part serial: 501630626
- Condition: Failed
- Location: Zone 700
- Stage of operation: TX
- How discovered: O
- Nature of condition: O
- Precautionary procedure: D
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2024101100796

## Discrepancy

MLG BRAKE PRESSURE: UPON TAXI OUT I APPLIED BRAKE PRESSURE TO MAKE THE INITIAL TURN OUT OF ATLANTIC AVIATION. I NOTICED THE BRAKES IMMEDIATELY FELT "MUSHY" AND CHATTERED MAKING THE WHOLE COCKPIT SHAKE. I HANDED THE CONTROLS OVER TO MY CO-PILOT AND THE SAME SCENARIO PLAYED OUT FOR HIM . CORRECTIVE ACTION: NETJETS REQUESTED WE REPLACE THE BCU. REMOVED AND REPLACED BCU WITH AN INSPECTED/TESTED UNIT. OPS CHECKS GOOD AT THIS TIME. WORK DONE REF PHENOM 300 AMM 32-41-01. BCU OFF P/N DAP00100-11 S/N 501630626 BCU ON P/N DAP00100-11 S/N 501820714

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