# SDR SB05066

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 3, 2005
- Submitted: June 7, 2005
- Operation: Air carrier
- Aircraft: [N448US](https://openairdocs.org/aircraft/N448US), registered now
- Make and model: Boeing 737-4B7
- Registry model: [Boeing 737-4B7](https://openairdocs.org/model/boeing-737-4b7) (OpenAirDocs)
- Aircraft serial: 24892
- System (JASC): [3260 · Landing Gear Position and Warning](https://openairdocs.org/jasc/3260)
- Part: Circuit Breaker
- Condition: Tripped
- Location: P6-2 Panel
- Stage of operation: DE
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SB05066

## Discrepancy

UPON LOWERING LANDING GEAR, CAPTAIN REPORTED THE NOSE LANDING GEAR UNSAFE LIGHT ILLUMINATED.  CREW ACCOMPLISHED A FLYBY OF THE TOWER WHEREAS THE GEAR WAS CONFIRMED DOWN.  CREW THEN NOTICED THE AIR/GROUND RELAY AND LIGHTS CIRCUIT BREAKER WAS POPPED.  CREW RESET CIRCUIT BREAKER AND RECEIVED A SAFE GEAR INDICATION.  FLIGHT LANDED WITHOUT FURTHER INCIDENT.  NO EMERGENCY WAS DECLARED.  MAINTENANCE CHECKED RETENTION ON CIRCUIT BREAKER P6-2 C21 AIR/GROUND RELAY.  NO DEFECTS NOTED.  INSPECTED NOSE GEAR PROX SWITCHES, WIRES AND NOSE GEAR.  NO DEFECTS NOTED.  AIRCRAFT OK FOR SERVICE.

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