# SDR SIMA201911253001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 23, 2019
- Submitted: November 25, 2019
- Operation: Air carrier
- Aircraft: [N685AE](https://openairdocs.org/aircraft/N685AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 14500836
- Aircraft time: 37,444 hours, 32,910 cycles
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Sensor
- Condition: Out Of Adjust
- Location: Mlg Wow
- Stage of operation: CL
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA201911253001

## Discrepancy

LG AIR/GND FAIL MSG ON EICAS SHORTLY AFTER TAKE OFF-C/A-FOUND CMC MSG FOR RH & LH MLG WOW SWITCH FAIL, FOUND FWD AND AFT  WOW SWITCH GAP OUT OF MAXIMUM LIMIT AT THE LH  LG  AND ADJUSTED BOTH  TO THE MINIMUM GAP IAW EMB145 AMM 32-63-05. PERFORMED OHM AND INSULATION TEST OF HARNESS BETWEEN RH & LH MLG WOW CONNECTORS FOR #1 & #2 SWITCHES AND THE CONNECTORS AT THE LGEU P1763 & P1764 IAW WM 32-61-50 AND SWPM 20-20-03, OPC GOOD NO DEFECTS NOTED. PERFORMED FUNCTIONAL TEST OF THE RH AND LH WOW PROX SWITCHES IAW ETN-EM-32-245, OPC GOOD.

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