# SDR Q2SA20180216389

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 2018
- Submitted: February 16, 2018
- Operation: Air carrier
- Aircraft: [N311GT](https://openairdocs.org/aircraft/N311GT), registered now
- Make and model: Boeing 737-4K5
- Registry model: [Boeing 737-4K5](https://openairdocs.org/model/boeing-737-4k5) (OpenAirDocs)
- Aircraft serial: 26316
- Aircraft time: 58,943 hours, 34,335 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Proximity Sensor
- Part number: 189929AEC
- Part serial: 5846
- Condition: Inoperative
- Location: Nlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/Q2SA20180216389

## Discrepancy

NOSE GEAR INDICATED BOTH RED AND GREEN LIGHTS ON WHILE LANDING GEAR LEVER WAS MOVED TO UP POSITION.  AIRCRAFT GROUNDED.  TROUBLESHOT THE NOSE GEAR INDICATION IAW AMM 32-61-00 P101. FOUND A FAULTY NOSE GEAR PROXIMITY SNESOR.  REMOVED AND REPLACED THE SENSOR IAW AMM 32-61-51.  PERFORMED A GEAR SWING. OPS CHECKED GOOD IAW AMM 32-61-00.

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