# SDR CALA0400580

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2004
- Submitted: July 19, 2004
- Operation: Air carrier
- Aircraft: [N12327](https://openairdocs.org/aircraft/N12327), registered now
- Make and model: Boeing 7373T0
- Aircraft serial: 23457
- Aircraft time: 54,521 hours, 28,398 cycles
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Valve
- Part number: 4105DA
- Part serial: 2946
- Condition: Inoperative
- Location: Nlg
- Part time: 27,305 hours, 14,405 cycles
- Stage of operation: AP
- 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/CALA0400580

## Discrepancy

THE NOSE GEAR DID NOT EXTEND ON FIRST ATTEMPT ON APPROACH INTO IAH.  A MANUAL EXTENSION WAS PERFORMED AND THE NOSE GEAR SHOWED DOWN AND LOCKED.  THE AIRCRAFT LANDED WITHOUT INCIDENT.  THE LANDING GEAR SELECTOR VALVE WAS REMOVED AND REPLACED IAW MM 32-31-51.  LEAK AND OPERATIONAL CHECKS WERE GOOD.

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