As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
GEAR INDICATOR FOR RIGHT MAIN LANDING GEAR SHOWED RED AFTER DEPARTING DTW. RECYCLED TWICE, NO EFFECT. RETURNED TO DTW. MAINTENANCE INSPECTED AND FOUND EXCESSIVE ICE BUILD UP IN ALL THREE GEAR WELLS, DEICE BOTH MAIN AND NOSE GEAR AREAS AND CLEANED GEAR PROX SWITCHES. TEST FLIGHT CHECKED GOOD.