# SDR HNAA2020062200171

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 21, 2020
- Submitted: June 22, 2020
- Operation: Air carrier
- Aircraft: [N627AE](https://openairdocs.org/aircraft/N627AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145121
- Aircraft time: 49,450 hours, 43,533 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Warning Message
- Condition: False Activation
- Location: Mlg
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2020062200171

## Discrepancy

MASTER WARNING LDG DISAGREE ON TAKE OFF. MAINTENANCE: FOLLOWED FIM TASK 32-32-00-810-803-A UP TO BLOCK DIAGRAM STEP 22 AND FOUND TO BE TRANSITORY CONDITION OF THE LANDING GEAR. AS A PRECAUTION WE BLEED BOTH HYDRAULIC SYSTEMS. OK FOR SERVICE. FOLLOW UP: REMOVED EICAS AND PERFORMED LANDING GEAR PROXIMITY SWITCH FUNCTIONAL CHECK. C/W W/C 32-70-01, 32-70-02, AND 32-70-03, NO DEFECTS NOTED. REINSTALLED EICAS AND PERFORMED EICAS OPS CHECK IAW TASK 31-41-00-700-802-A. REMOVAL AND INSTALLATION MADE IAW AMM 34-22-01.

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