# SDR SIMA200805705

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 22, 2008
- Submitted: February 26, 2008
- Operation: Air carrier
- Aircraft: [N511AE](https://openairdocs.org/aircraft/N511AE), registered now
- Make and model: Cndair CL6002C10
- Aircraft serial: 10107
- Aircraft time: 12,263 hours, 8,760 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Selector Valve
- Part number: 533407
- Part serial: N66117602
- Condition: Malfunctioned
- Location: Mlg
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200805705

## Discrepancy

ON FLIGHT 3757, CREW REPORTED LANDING GEAR WOULD NOT EXTEND.  PERFORMED MANUAL/EMERGENCY EXTENSION.  ENGINE HYDRAULIC PUMP PRESSURE WAS NORMAL.  CREW ATTEMPTED TO EXTEND GEAR 3 TIMES BUT FAILED.  DID GET A LG DISAGREE WARNING.  HAD TO DO A GO AROUND TO GET GEAR DOWN.  AIRCRAFT REMOVED FROM SERVICE.  REMOVED AND REPLACED LANDING GEAR SELECTOR VALVE AS PER AMM 52-32-10.  PERFORMED OPERATIONAL CHECK OF LANDING GEAR EXTENSION AND RETRACTION OPERATIONAL CHECK GOOD.  AIRCRAFT RETURNED TO SERVICE.

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