# SDR 4512603302006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2006
- Submitted: April 11, 2006
- Operation: Air carrier
- Aircraft: [N420FX](https://openairdocs.org/aircraft/N420FX), registered now
- Make and model: Lear 45LEAR
- Aircraft serial: 126
- Aircraft time: 4,383 hours, 3,343 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Control Valve
- Part number: 6632302001003
- Condition: Malfunctioned
- Location: Mlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/4512603302006

## Discrepancy

GEAR WOULD NOT RETRACT WHEN COMMANDED.  MAINTENANCE TROUBLESHOOTING REVEALED A FAULTY LANDING GEAR CONTROL VALVE.  REMOVED AND REPLACED VALVE.  OPS CHECK NORMAL.

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