# SDR CA121012005

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Cndair CL6002B19
- System (JASC): [3231 · Landing Gear Door Retract Section](https://openairdocs.org/jasc/3231)
- Part: Selector Valve
- Part number: 750006000
- Condition: Failed
- Location: Nlg Doors
- Stage of operation: AP
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA121012005

## Discrepancy

(CAN) NLG FAILED TO EXTEND DURING APPROACH.  AT LAST, THE CREW RELEASED THE NLG WITH MANUAL RELEASE HANDLE.  THE ROOT CAUSE OF THE INCIDENT WAS NLG DOORS CAN`T BE OPENED.  AFTER THE MAINTENANCE REPLACED THE DOOR SELECTOR VALVE, THE NLG DOORS CAN BE OPERATED NORMALLY AND THE FUNCTIONAL TEST OF LANDING GEAR EXTENSION, RETRACTION WAS OK.

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