As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UPON LANDING, GEAR EXTENSION, NOSE LEFT & RIGHT MAIN LANDING GEAR RED UNSAFE LIGHTS ILLUMINATED WITH ALL GREEN DOWN AND LOCKED LIGHT. PERFORMED COM PROCEDURES. ALL INDICATIONS NORMAL. PERFORMED GEAR INDICATION FUNCTIONAL TEST IAW MM 31-09-121. COULD NOT DUPLICATE. SYSTEM GROUND CHECK GOOD.