# SDR SIMA20131211012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 11, 2013
- Submitted: December 13, 2013
- Operation: Air carrier
- Aircraft: [N635AE](https://openairdocs.org/aircraft/N635AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145158
- Aircraft time: 34,225 hours, 31,151 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Proximity Sensor
- Part number: 8005701
- Part serial: 3151
- Condition: Malfunctioned
- 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/SIMA20131211012

## Discrepancy

ON FLIGHT 3621 IMMEDIATELY AFTER TAKEOFF CREW REPORTED LANDING GEAR AIR GROUND FAIL CAUTION MESSAGE APPEARED ON EICAS.  DECLARED EMERGENCY & IMMEDIATELY RETURNED TO THE AIRPORT & LANDED WITHOUT INCIDENT.  THE ACFT WAS REMOVED FROM SERVICE.  R & R THE NLG AIR GROUND WOW PROXIMITY SWITCH IAW NRWC 635-ORD-01605 IAW EMB AMM 32-63-02.  THE ACFT RETURN TO SERVICE.

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