# SDR 9510863211

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 17, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N311US
- Make and model: Airbus A320-211
- Registry model: [Airbus A320-211](https://openairdocs.org/model/airbus-industrie-a320-211) (OpenAirDocs)
- Aircraft serial: 125
- System (JASC): [2913 · Hydraulic Pump (Electric/Engine), Main](https://openairdocs.org/jasc/2913)
- Part: Hyd Pump
- Part number: 4205400
- Condition: Leaking
- Location: Nr 1 Engine
- Part time: 13,084 hours
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9510863211

## Discrepancy

DURING CRUISE AT FL 370 APPROXIMATELY ONE HOUR INTO FLIGHT, THE GREEN HYDRAULIC SYSTEM QUANTITY DROPPED TO ZERO.  THE POWER TRANSFER UNIT AND THE NR 1 ENGINE DRIVEN HYDRAULIC PUMP WERE DISCONNECTED.  FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND CONTINUED TO DTW WHERE AN EMERGENCY WAS DECLARED AND AN UNEVENTFUL LANDING ACCOMPLISHED.  MAINTENANCE FOUND THE NR 1 ENGINE DRIVEN HYDRALUIC PUMP LEAKING.  REPLACED THE NR 1 EDP.  LEAK AND OPERATIONAL CHECK OK.

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