# SDR CHQA200900102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2009
- Submitted: April 9, 2009
- Operation: Air carrier
- Aircraft: N258JQ
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145768
- Aircraft time: 14,119 hours, 12,168 cycles
- Engine: Allsn AE3007A
- Engine time: 17,786 hours, 14,767 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Proximity Switch
- Part number: 8005701
- Part serial: UNKNOWN
- Condition: Faulty
- Location: Rt Mlg
- 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/CHQA200900102

## Discrepancy

FLIGHT 3054, BUF TO BOS - THE FLIGHT CREW RECEIVED A LANDING GEAR AIR/GROUND FAIL MESSAGE ON TAKEOFF.  THE AIRCRAFT RETURNED TO BUF AND LANDED WITHOUT INCIDENT.  MAINTENANCE FOUND CMC MESSAGES FOR LGEU FAIL AND PROX SWITCH FAIL.  AN AIR/GROUND TEST WAS PERFORMED AND FLAGGED THE NR 1 WOW PROX SWITCH ON THE RIGHT MAIN LANDING GEAR.  THE PROX SWITCH WAS DEFERRED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.  THE DEFERRAL WAS CLEARED IN SDF ON 4/8/2009 WHEN THE PROX SWITCH WAS REPLACED.

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