# SDR AWXA0000004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 6, 2000
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N636AW
- Make and model: Airbus A320-231
- Registry model: [Airbus A320-231](https://openairdocs.org/model/airbus-industrie-a320-231) (OpenAirDocs)
- Aircraft serial: 098
- System (JASC): [2920 · Hydraulic System, Auxiliary](https://openairdocs.org/jasc/2920)
- Part: O-Ring
- Part number: NAS1611115
- Condition: Leaking
- Location: Aux Hyd System
- Stage of operation: CR
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA0000004

## Discrepancy

DIVERSION/EMERGENCY DECLARED BY AIRPORT AUTHORITY HYD WARNING.  YELLOW RESERVOIR LOW LEVEL WARNING, FOLLOWED BY LOW AIR PRESSURE, ULTIMATELY LOST ALL SYSTEM HYDRAULIC PRESSURE.  REPLACED O-RINGS ON PTU PRIORITY VALVE, LEAK CKS GOOD.  ALSO, REPLACED HP RETURN AND CASE DRAIN FILTERS, NO DEFECT NOTED, NO DEBRIS IN OLD FILTERS.

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