As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF GEAR HANDLE UP AND GEAR DOOR LIGHT REMAINED ILLUMINATED, GEAR INDICATING LIGHTS EXTINGUISHED. ACCOMPLISHED QRH AFTER GEAR LOWERED. LANDING GEAR MTC IN PROGRESS. REPLACED LT MLG DOOR PROX SWITCH. VERIFIED ADJUSTMENT AND ALIGNMENT OF PROX SWITCH AND TARGET ON LT MLG DOOR AFTER DOOR REPLACEMENT OPERATED GEAR THREE CYCLES, NO DEFECTS NOTED.