# SDR USAA2013072900040

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 26, 2013
- Submitted: July 29, 2013
- Operation: Air carrier
- Aircraft: [N749US](https://openairdocs.org/aircraft/N749US), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1313
- Aircraft time: 34,490 hours, 22,587 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Priority Valve
- Condition: Leaking
- Location: Hyd System
- Stage of operation: CL
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2013072900040

## Discrepancy

AFTER DEPARTURE, CREW REPORTED YELLOW HYD QTY WENT TO ZERO.  FOLLOWED QRH PROCEDURES AND CONTINUED TO DESTINATION.  DECLARED AN EMERGENCY.   LANDED WITHOUT INCIDENT AND TAXIED TO THE GATE.  MAINTENANCE R & R YELLOW HYD SYS PRIORITY VALVE IAW AMM 29-13-33-000-001-A. OPS AND LEAK CHECKED GOOD IAW TASK 29-13-00-810-801-A.   ENGINE HYD SYS WAS IMMEDIATELY SHUT OFF ON FAULT.  SYS DPI'S CHECKED NORMAL.

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