As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - CREW REPORTED LEFT MAIN LANDING GEAR UNSAFE LIGHT ILLUMINATED DURING CLIMBOUT. GEAR WAS CYCLED WITH NO CHANGE IN WARNING LIGHT. FLIGHT RETURNED PHX LANDED WITHOUT INCIDENT. FOUND BROKEN BRACKET IN LEFT WHEEL WELL WHICH HOLDS THE UP AND LOCKED PROXIMITY SENSOR. REPLACED CRANK ASSEMBLY. SYSTEM GROUND CHECK NORMAL OPERATION.