# SDR AALA202304045457

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 22, 2023
- Submitted: April 4, 2023
- Operation: Air carrier
- Aircraft: [N809AW](https://openairdocs.org/aircraft/N809AW), registered now
- Make and model: Airbus A319-132
- Registry model: [Airbus A319-132](https://openairdocs.org/model/airbus-a319-132) (OpenAirDocs)
- Aircraft serial: 1111
- Aircraft time: 72,026 hours, 32,680 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Safety Valve
- Part number: C252430022
- Condition: Defective
- Location: Zone 700 - Gears
- Stage of operation: TX
- How discovered: V
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202304045457

## Discrepancy

AIRCRAFT WAS GROUNDED: AFTER PUSHBACK AND ENGINE START, LEFT SIDE BRAKES WOULD NOT RELEASE FOR TAXI. SHUTDOWN ENGINES, THEN ABLE TO GET LEFT SIDE TO "0" FOR TOWING. 800 PSI ON TRIPLE INDICATOR. **ORIGINAL REPORT WAS AALA202303241171** MAINTENANCE REPLACED THE #1 AND #2 BRAKE NORMAL BRAKE SERVOS PER AMM 32-42-48. (AALA202304044199) ALSO REPLACED THE #1 AND #2 BRAKE NORMAL BRAKE SAFETY VALVES PER AMM 32-42-36. (AALA202304045457, AALA202304040339) A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED INCLUDING A TAXI CHECK.

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