# SDR 95ZZZX511

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 4, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: N8223M
- Make and model: Cessna 210K
- Registry model: [Cessna 210K](https://openairdocs.org/model/cessna-210k) (OpenAirDocs)
- Aircraft serial: 21059233
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Uplock Valve
- Part number: 12805042
- Condition: Missing Part
- Location: Nlg
- Stage of operation: LD
- Nature of condition: W
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95ZZZX511

## Discrepancy

AIRCRAFT NOSE GEAR COLLAPSED AFTER A LANDING GROUND ROLL WITH MINOR DAMAGE TO AIRCAFT AND PROP BLADES.  INSPECTION FOUND NOSE GEAR UPLOCK VALVE, THAT HAD BEEN REPLACED PRIOR TO FLIGHT WITH A USED UNIT, MISSING A SMALL CHECK BALL CAUSING A LARGER CHECK BALL TO WEDGE WITHIN ITS SEAT.  AIRCRAFT ON JACKS PERFORMED AS REQUIRED AND LOCKED.  IN-FLIGHT, THE DOWNLOCKS WOULD NOT FULLY LOCK, ONLY PART WAY.  USED UNITS SHOULD BE INSPECTED CLOSELY BEFORE INSTALLING IN AIRCRAFT.

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