What was found
YIP - AFTER TAKEOFF IN RETRACTING, LANDING GEAR WARNING HORN WOULD NOT SILENCE AND THE 3 RED GEAR LIGHTS REMAINED ON. LANDING GEAR WAS EXTENDED NORMALLY AND AIRCRAFT RETURNED TO YIP WITHOUT INCIDENT. FOUND BROKEN 24G SWITCH LEVER ARM WHICH WAS CAUSED BY A BROKEN LEVER ARM SUPPORT BRACKET. REPLACED BROKEN LEVER ARM AND LEVER ARM SUPPORT BRACKET. OPERATIONALLY CHECKED LANDING GEAR SYSTEM IAW FALCON MM 32-60-4. NO DEFECTS WERE NOTED. REFERENCE YIEA96012.