# SDR 2006UALA00369

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 2, 2006
- Submitted: March 7, 2006
- Operation: Air carrier
- Aircraft: [N439UA](https://openairdocs.org/aircraft/N439UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 683
- Aircraft time: 31,496 hours, 10,948 cycles
- Engine: Iae V2527A5
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Screw
- Condition: Sheared
- Location: Bypass Valve
- Component: Bypass Valve, Smithsind
- Component part number: 1140087006
- Stage of operation: CL
- How discovered: 9
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2006UALA00369

## Discrepancy

RETURN TO FIELD DUE TO A LOSS OF GREEN HYDRAULIC SYSTEM.  LOSS GREEN HYD FLUID LEVEL.  YELLOW AND BLUE SYS APPEARS OK.  SECURED GREEN HYD SYS PER IRREG PROCEDURES.  INSTALL GROUND SAFETY LOCKS PER AMM 32-00-00 AND TROUBLESHOOT.  SOURCE OF GREEN HYD QTY LOSS.  REPLACED MLG DOOR GROUND OPENING BYPASS VALVE PER AMM 32-31-13-000-001 AND 32-31-13-400-00 1.  OPS CK'D PER 32-31-00-710-002-01.  SYS OP CKS.

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