As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHEN STARTING DESCENT OUT OF 23,000, RED GEAR UNSAFE INDICATION ON LT MAIN LANDING GEAR CAME ON AND AIRSPEED WENT RED. SLOWED BELOW 195 MAX GEAR SPEED, AIRSPEED WENT BACK GREEN, GEAR INDICATION STILL UNSAFE. GEAR EXTENDED NORMALLY WITH 3 GREEN. REMOVED LT MLG AFT UPLOCK PROXIMITY SWITCH AND INSTALLED INSPECTED LT MLG AFT UPLOCK PROXIMITY SWITCH IAW MM 32-10-11. COMPLIED WITH OPS CK AND FUNCTIONAL CHECKS.