# SDR 99ZZZX61

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N716AW
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 716
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Valve
- Part number: 326705
- Condition: Failed
- Location: Hydraulic System
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/99ZZZX61

## Discrepancy

CHECK VALVE FAILED CAUSING AC PUMP (YELLOW SYSTEM) TO BE BACK DRIVEN BY N2 ENGINE EDP.  CHECK VALVE FIN 8083.  NOTE:  FAILED CHECK VALVE WAS DISCOVERED AFTER SECOND PUMP REPLACEMENT.

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