What was found
SEA - LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF WITH GEAR HANDLE IN UP POSITION. LEVER WOULD NOT RETURN TO THE DOWN POSITION, WHEN ATTEMPTED TO MOVE BY CREW. 6 GREEN LANDING GEAR INDICATOR LIGHTS AND 3 RED LIGHTS ILLUMINATED THEN ACCOMPANIED THIS. RETURNED TO SEA AND LANDED WITHOUT INCIDENT. INSPECTED LANDING GEAR CONTROL LEVER MODULE. FOUND 3 SCREWS AND WASHERS THAT SECURED TELEFLEX CABLE ASSEMBLY TO REAR OF CONTROL LEVER MODULE MISSING. INSTALLED MISSING HARDWARE, OPS CHECKED SYSTEM, OPS CHECKED GOOD. APPEARS SCREWS WERE NOT INSTALLED ORIGINALLY DURING AIRCRAFT ASSEMBLY. (M)