# SDR AALA201706099044

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 6, 2017
- Submitted: June 10, 2017
- Operation: Air carrier
- Aircraft: [N865NN](https://openairdocs.org/aircraft/N865NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29554
- Aircraft time: 21,265 hours, 8,378 cycles
- System (JASC): [3234 · Landing Gear Selector](https://openairdocs.org/jasc/3234)
- Part: Selector Valve
- Part number: 1FA011342
- Condition: Faulty
- Location: Cockpit
- Stage of operation: AP
- How discovered: O
- Nature of condition: O
- Precautionary procedure: L
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201706099044

## Discrepancy

THE AIRCRAFT WAS GROUNDED. ON APPROACH, LEFT MAIN GEAR WOULD NOT EXTEND. THE FLIGHT PERFORMED A GO-AROUND AND ACCOMPLISHED MANUAL GEAR EXTENSION CHECKLIST. AN EMERGENCY WAS DECLARED. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE REMOVED AND REPLACED LANDING GEAR SELECTOR VALVE IAW 32-31-51-401. ALL OPS CHECK AND GROUND CHECKS NORMAL. (SEE ALSO SDR AALA201706089038)

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