As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SLC INFLIGHT T416/27OCT - GEAR DOOR OPEN LIGHT WOULD NOT EXTINGUISH AFTER GEAR RETRACTION. RETURNED TO SLC AND LANDED WITHOUT INCIDENT. FOUND LEFT MAIN LANDING GEAR PROXIMITY TARGET ASSEMBLY BROKEN OFF. REPLACED LEFT MAIN LANDING GEAR PROXIMITY TARGET ASSEMBLY. SYSTEM GROUND CHECKED NORMAL OPERATION.