# SDR TRBA2011050

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 7, 2011
- Submitted: May 13, 2011
- Operation: Air carrier
- Aircraft: N431AT
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft serial: 431
- Aircraft time: 29,448 hours, 32,339 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Selector Valve
- Part number: 1005383Y00REVC
- Part serial: 481
- Condition: Failed
- Location: Mlg
- Part time: 29,448 hours, 32,339 cycles
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/TRBA2011050

## Discrepancy

LANDING GEAR DID NOT COME DOWN WHEN SELECTED DOWN ON THE L/G LEVER.  MANUAL EXTENSION WAS ACCOMPLISHED USING THE EMERGENCY HANDLE.  REMOVED AND INSTALLED LANDING GEAR SELECTOR VALVE IAW JIC 32-31-51.  NO LEAKS NOTED AND PERFORMED NORMAL EXTENSION AND RETRACTION FUNCTIONAL TEST AND FOUND OK IAW JIC 32-31-00.

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