# SDR C2XA02IA032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 17, 2002
- Submitted: February 19, 2002
- Operation: Air carrier
- Aircraft: N17728
- Make and model: Emb EMB-120ER
- Registry model: [EMB EMB-120ER](https://openairdocs.org/model/embraer-emb-120er) (OpenAirDocs)
- Aircraft serial: 120182
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Control Box
- Part number: 12043270501
- Part serial: 120132R
- Condition: Faulty
- Location: Cockpit
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/C2XA02IA032

## Discrepancy

IAH-  DURING APPROACH FLIGHT 3989, THE CREW NOTED THE FOLLOWING, THE LANDING GEAR WOULD NOT COME DOWN.  LEFT GEAR SYSTEM -A- LIGHT (GREEN) ON AND ALL OTHER RED LIGHTS ILLUMINATED (SYSTEM-B AND RIGHT AND NOSE SYSTEM-A).  GEAR WAS CYCLED, BUT DID NOT COME DOWN UNTIL AFTER GO-AROUND IN A 30 DEGREE BANK.  MAINTENANCE REMOVED AND REPLACED THE LANDING GEAR CONTROL RELAY BOX, PERFORMED A OPERATIONAL CHECK OF THE LANDING GEAR SYSTEM, NO DEFECTS NOTED AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

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