# SDR AWXA0001854

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2001
- Submitted: June 13, 2001
- Operation: Air carrier
- Aircraft: N640AW
- Make and model: Airbus A320-231
- Registry model: [Airbus A320-231](https://openairdocs.org/model/airbus-industrie-a320-231) (OpenAirDocs)
- Aircraft serial: 448
- Aircraft time: 27,808 hours, 11,680 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Pilot Valve
- Part number: S43401190
- Condition: Leaking
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: J, K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AWXA0001854

## Discrepancy

PHX - AIR TURNBACK - 6/5/01 - FLT 253 - EN ROUTE TO PHL ECAM MSG DISPLAYED HYD YELLOW SYS LOW LEVEL; YELLOW HYD QUANTITY INDICATED IN THE AMBER BAND; CREW COMPLIED W/ THE ECAM ACTIONS & RETURNED TO PHX MAKING AN UNEVENTFUL LANDING.  MX INSPECTED THE A/C AND FOUND THE YELLOW HYD SYS LEAK MEASUREMENT VALVE, PILOT VALVE LEAKING; THE PILOT VALVE WAS REPLACED, THE YELLOW SYS WAS SERVICED AND LEAK CHECKS AND FUNCTIONAL CHECKS WERE GOOD IAW AMM 29-19-51-401.

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