# SDR AALA202302145428

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2023
- Submitted: February 14, 2023
- Operation: Air carrier
- Aircraft: [N170US](https://openairdocs.org/aircraft/N170US), registered now
- Make and model: Airbus A320*
- Aircraft serial: 1462
- Aircraft time: 69,996 hours, 26,795 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Servo Valve
- Part number: C20103500
- Condition: Leaking
- Location: Zone 100 - Fuse
- 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/AALA202302145428

## Discrepancy

AIRCRAFT WAS GROUNDED: BRAKES PULSATING BELOW 60 KNOTS ON ROLLOUT. NO IRREGULAR INDICATIONS ON HYD PAGE OR INDICATOR LIGHTS. MAINTENANCE FOUND THE ALTERNATE BRAKE SERVO VALVE LEAKING AND REPLACED IT PER AMM 32-43-27. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.

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