As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN RETRACTING LANDING GEAR AFTER TAKEOFF THE RED GEAR UNLOCKED LIGHT CAME ON. RECYCLED GEAR WITH SAME AFFECT. RETURNED TO GNO WITH GEAR LOCKED IN THE DOWN POSITION. MAINTENANCE INSPECTED LANDING GEAR FOUND WEIGHT ON WHEEL SWITCH BRACKET SLIGHTLY OUT OF AFJUSTMENT, ADJUSTED BRACKET AS REQUIRED.