# SDR DXTA2026080609135

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 3, 2026
- Submitted: August 6, 2026
- Operation: Air carrier
- Aircraft: [N789QS](https://openairdocs.org/aircraft/N789QS), registered now
- Make and model: Bombdr BD1001A10
- Aircraft serial: 20617
- Aircraft time: 10,673 hours, 6,243 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Control Valve
- Part number: 398531
- Part serial: 1300
- Condition: Defective
- Location: Brake Sys
- Stage of operation: CL
- How discovered: O
- Nature of condition: G, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026080609135

## Discrepancy

ON TAKEOFF WE RECEIVED A LT OTBD BRAKE FAIL MESSAGE. THIS WAS FOLLOWED SHORTLY BY A R OTBD BRAKE FAIL MESSAGE. ABORTED. THE MESSAGES CAME ON AND OFF INTERMITTANTLY AFTER THAT. B3 CODES ARE AS FOLLOWS: B3-007830 AND B3-007107.  REPLACED BRAKE CONTROL VALVE. OPS CHECK GOOD. IAW AMM 32-43-09.

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