SDR 2002F00933

Service difficulty report · Control Valve · Cessna 750

Difficulty date: September 11, 2002
Submitted: October 15, 2002
Operation: Air carrier
Aircraft: N986QS
Make and model: Cessna 750
Aircraft serial: 7500086
System (JASC): 3230 · Landing Gear Retraction/Extension System
Part: Control Valve
Part number: 991446110
Part serial: 118B
Condition: Failed
Location: Landing Gear
Part time: 1,162 hours
Stage of operation: AP
How discovered: O
Nature of condition: J
Precautionary procedure: K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DESCENDING THROUGH 18,000 FEET LIGHT THUMP AND LANDING GEAR UNLOCK LIGHT ILLUMINATED. THIS HAPPENED TWICE MORE AT 10,000 FEET AND 6,000 FEET. AIRCRAFT LANDED WITHOUT INCIDENT IN PBI. MAINTENANCE REMOVED AND REPLACED LANDING GEAR CONTROL VALVE AND APPROVED THE A/C FOR RETURN TO SERVICE. (M)

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