# SDR HNAA2018021400028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 12, 2018
- Submitted: February 14, 2018
- Operation: Air carrier
- Aircraft: [N659AE](https://openairdocs.org/aircraft/N659AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145762
- Aircraft time: 34,652 hours, 30,247 cycles
- System (JASC): [3200 · Landing Gear System](https://openairdocs.org/jasc/3200)
- Part: Unknown
- Condition: Multiple Fail
- Stage of operation: CR
- How discovered: O
- Nature of condition: G
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2018021400028

## Discrepancy

AT APPROXIMATELY 500 FT, THE  AUTOPILOT WAS SELECTED ON, ONLY YAW DAMPER ENGAGED,  LANDING GEAR AIR GROUND FAIL MESSAGE DISPLAYED ON EICAS.  APPROXIMATELY 20 SECONDS LATER,  NR 1 & 2 ENGINE REVERSERS DISAGREE MESSAGE DISPLAYED ON EICAS.  OPS CHECK OF THE AIR - GROUND WOW SYSTEM GOOD AT THIS TIME IAW 32-60-00.  FUNCTIONAL CHECK OF THE PROXIMITY SWITCHES USING BREAKOUT BOX GOOD IAW 32-63-05.  NO ERRONEOUS MESSAGES NOTED. OPS CHECKED OF THE THRUST REVERSERS WAS GOOD IAW 78-31-01.  NO ERRONEOUS MESSAGES NOTED. OK FOR SERVICE.

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