# SDR USAA2014082400001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 23, 2014
- Submitted: August 25, 2014
- Operation: Air carrier
- Aircraft: [N122US](https://openairdocs.org/aircraft/N122US), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 1298
- Aircraft time: 43,611 hours, 20,048 cycles
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Bypass Valve
- Part number: 3031863001
- Part serial: CWDDDH14200
- Condition: Leaking
- Location: Nlg Door
- Stage of operation: CL
- How discovered: O
- Nature of condition: K
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2014082400001

## Discrepancy

AIRCRAFT RETURNED AFTER IT LOST HYD GREEN SYS AT APPROX ALT OF 8000'.  FOUND NLG DOOR GND OPENING BYPASS VLV WAS LEAKING.  REPLACED BYPASS VLV IAW AMM 32-31-15-000-001-A.  AS PRECAUTIONARY, REPLACED NR 1 ENG GREEN SYS HYD PUMP IAW AMM 29-11-51-00-041-A & REPLACED ASSOCIATED FILTERS.

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