What was found
ON TAKEOFF AFTER THE GEAR HANDLE WAS MOVED TO THE FULL UP POSITION HAD 3 RED & 3 GREEN LIGHTS. VERIFIED MANUAL EXTENSION ACCESS PANEL CLOSED & ALL CB`S WERE IN. PUT GEAR HANDLE BACK DOWN & GOT 3 GREEN LIGHTS. FLIGHT RETURNED & LANDED WITHOUT INCIDENT. MX VERIFIED NO GEAR PINS INSTALLED. NO FAULTS ON PSEU BITE CHECK. OPERATED GEAR SEVERAL TIMES WITH NO FAULTS. SYS GND CHECKED NORMAL OPERATION CLOSED.