# SDR DXTA200803140

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 23, 2008
- Submitted: July 25, 2008
- Operation: Air carrier
- Aircraft: [N687QS](https://openairdocs.org/aircraft/N687QS), registered now
- Make and model: Cessna 560XL
- Registry model: [Cessna 560XL](https://openairdocs.org/model/cessna-560xl) (OpenAirDocs)
- Aircraft serial: 5605187
- System (JASC): [3230 · Landing Gear Retraction/Extension System](https://openairdocs.org/jasc/3230)
- Part: Control Valve
- Part number: 718391
- Part serial: 257
- Condition: Malfunctioned
- Location: Mlg
- Part time: 6,336 hours, 4,943 cycles
- Stage of operation: AP
- 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/DXTA200803140

## Discrepancy

ENCOUNTERED SEVERE TURBULENCE AT FL350. GEAR HANDLE PLACED IN THE DOWN POSITION ON FINAL APPROACH AND NOTHING HAPPENED FOR 3-5 SECONDS TEHN THE GEAR EXTENDED NORMALLY.  COMPLIED WITH SERVERE TURBULANCE INSP IAW MM 05-50-20 PARA 5. NO DEFECTS FOUND WITH A/C AT THIS TIME. DUPLICATED PROBLEM ON GROUND. TROUBLESHOT & FOUND PROPER ELECTRICAL POWER & GROUND TO LAND GEAR CONTROL VALVE AS WELL AS HYDRAULIC LOADING VALVE. REPLACED LANDING GEAR CONTROL VALVE WITH AN OVERHAULED VALVE PER MM 32-30-02. FOUND LANDING GEAR TO EXTEND & RETRACT PROPERLY 10 TIMES IN A ROW PER MM 32-30-00. LEAK CHECKED GOOD. HYD RESERVOIR SERVICED TO FULL.

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