# SDR SWAA074238

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2007
- Submitted: August 29, 2007
- Operation: Air carrier
- Aircraft: [N509SW](https://openairdocs.org/aircraft/N509SW), registered now
- Make and model: Boeing 737-5H4
- Registry model: [Boeing 737-5H4](https://openairdocs.org/model/boeing-737-5h4) (OpenAirDocs)
- Aircraft serial: 24186
- Aircraft time: 53,731 hours, 53,755 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Logic Card
- Part number: 121909018
- Part serial: D00672
- Condition: Faulty
- Location: Nlg Indicator
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWAA074238

## Discrepancy

THIRTY MINUTES PRIOR TO DESCENT NLG RED LIGHT ILLUMINATED.  WHEN GEAR HANDLE SELECTED TO DOWN POSITION NLG INDICATED UNSAFE.  CYCLED GEAR TWICE BEFORE SAFE INDICATION.  REMOVED AND REPLACED NLG M983 LOGIC CARD PER MM.

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