# SDR SIMA200717704

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2007
- Submitted: June 26, 2007
- Operation: Air carrier
- Aircraft: [N653AE](https://openairdocs.org/aircraft/N653AE), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145433
- Aircraft time: 14,476 hours, 14,203 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Electronic Unit
- Part number: 355022002
- Part serial: 1271
- Condition: Failed
- Location: Zone 200
- Part time: 11,636 hours, 10,900 cycles
- Stage of operation: LD
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SIMA200717704

## Discrepancy

DURING GEAR EXTENSION RECEIVED LANDING GEAR DISAGREE, LANDING GEAR AIR/GROUND FAIL MESSAGE WITH THREE GREEN LIGHTS.  PERFORMED MANUAL GEAR EXTENSION, DECLARED EMERGENCY.  PERFORMED CENTRAL MAINTENANCE SYSTEM DOWNLOAD IAW EMB AMM 45-900-00 AND FLIGHT DATA RECORDER DOWNLOAD IAW AMERICAN EAGLE WORKCARD 31-700-05.  PERFORMED OPERATIONAL CHECK OF AIR/GROUND SYSTEM IAW AMERICAN EAGLE WORKCARD32-700-16 WITH NO DEFECTS NOTED.  REMOVED AND REPLACED LANDING GEAR ELECTRONIC CONTROL UNIT AND PERFORMED OPERATIONAL CHECKS IAW EMB AMM.  RETURNED AIRCRAFT TO SERVICE.

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