As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE, WHEN THE LANDING GEAR HANDLE WAS MOVED TO THE UP POSITION, THE GEAR UNLOCK AND THE HYD PRESS ON LIGHTS REMAINED ILLUMINATED. THE HANDLE WAS RETURNED TO DOWN, (3) GREEN ILLUMINATED, ALL OTHER INDICATIONS WERE NORMAL [SUP 4-27-07] INSPECTED LANDING GEAR AND PERFORMED SEVERAL LANDING GEAR FUNCTIONAL TESTS I/A/W CE560 MM 32-01-00 WITH NO DEFECTS NOTED.