# SDR 3LYA090602

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 2, 2009
- Submitted: June 3, 2009
- Operation: Air carrier
- Aircraft: N507LX
- Make and model: Bombdr DHC8402
- Aircraft serial: 4178
- Aircraft time: 32,671 hours, 3,288 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Sequence Valve
- Part number: 483076
- Part serial: 0583
- Condition: Defective
- Location: Zone 700
- 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/3LYA090602

## Discrepancy

NLG DOOR ADVISORY LT REMAINED ON AFTER GEAR RETRACTION AFTER TAKEOFF.  PERFORMED AIR TURN BACK.  MX REMOVED AND REPLACED THE NLG SOLENOID SEQUENCE VALVE. PERFORMED GEAR SWING AND OPS AND LEAK CHECK.  NO DEFECTS.  ACFT WAS RETURNED 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.