# SDR JJBA20220721024

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2022
- Submitted: July 21, 2022
- Operation: Air carrier
- Aircraft: [N31131](https://openairdocs.org/aircraft/N31131), registered now
- Make and model: Emb EMB-145XR
- Registry model: [EMB EMB-145XR](https://openairdocs.org/model/embraer-emb-145xr) (OpenAirDocs)
- Aircraft serial: 145705
- Aircraft time: 45,885 hours, 28,831 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Proximity Switch
- Part number: 852701
- Condition: Failed
- Stage of operation: TO
- How discovered: V
- Nature of condition: S
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JJBA20220721024

## Discrepancy

LANDING GEAR AIR/GROUND SYSTEM FAILURE. EICAS MSG LG AIR/GND FAIL APPEARED AFTER TAKEOFF. LG WOULD NOT RETRACT. HANDLE WOULD NOT MOVE. REMOVED AND REPLACED NOSE GEAR "WOW" PROX SWITCH -PERFORMED OPS CHECK, OPS CHECK GOOD

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