# SDR AALA201610079007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 4, 2016
- Submitted: October 7, 2016
- Operation: Air carrier
- Aircraft: [N724UW](https://openairdocs.org/aircraft/N724UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1122
- Aircraft time: 46,933 hours, 27,864 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Leaking
- Location: Hyd System
- Stage of operation: CR
- 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/AALA201610079007

## Discrepancy

WHILE AIRCRAFT WAS AT ALTITTUDE, FLIGHT CREW RECEIVED WARNING NR 2 ENGINE YELLOW HYDRAULIC SYSTEM PUMP HAS LOW PRESSURE.  DECLARED EMERGENCY, AIRCRAFT LANDED WITHOUT FURTHER INCIDENT.  REPLACED THE O-RING AT POWER TRANSFER UNIT REDUCER IAW AMM 29-13-15.  AIRCRAFT WAS GROUNDED.

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