# SDR SIMA200415805

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 5, 2004
- Submitted: July 2, 2004
- Operation: Air carrier
- Aircraft: [N631AE](https://openairdocs.org/aircraft/N631AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145139
- Engine: Allsn AE3007A
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Switch
- Part number: 852701
- Part serial: 49087
- Condition: Inoperative
- Location: Lt Mlg
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200415805

## Discrepancy

DURING TAKEOFF CREW REPORTED THE LANDING GEAR DID NOT RETRACT WHEN SELECTED UP.  CREW NOTED A LDG AIR/GRD MESSAGE ON EICAS.  CREW RETURNED TO DEPARTURE AIRPORT.  MAINTENANCE DOWNLOADED CMC AND FOUND MULTIPLE FAILURES ON THE LT PROXIMITY SWITCH.  THE LT WOW PROXIMITY SWITCHES 1 AND 2 WERE REPLACED.  OPERATIONAL CHECK WAS GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.

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