# SDR C2XA02IA249

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 8, 2002
- Submitted: December 9, 2002
- Operation: Air carrier
- Aircraft: N93840
- Make and model: Aerosp ATR 42-320
- Registry model: [Aerosp ATR 42-320](https://openairdocs.org/model/aerospatiale-aeritalia-atr-42-320) (OpenAirDocs)
- Aircraft serial: 271
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Control Valve
- Part number: 1005383Y00
- Part serial: 294
- Condition: Inoperative
- 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/C2XA02IA249

## Discrepancy

UPON GEAR RETRACTION AFTER TAKEOFF, THREE GREEN GEAR LIGHTS LIT UP SIMULTANEOUSLY WITH THREE RED UNLOCK LIGHTS ON BOTH OVERHEAD PANEL, AND, MAIN INSTRUMENT PANEL, AND, THE GEAR WOULD NOT RETRACT.  MAINTENANCE REMOVED, AND,REPLACED THE LANDING GEAR CONTROL VALVE, PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED, AND, THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.