As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAKE OFF, ON GEAR RETRACTION L-R-NOSE GEAR RED ILLUMINATE AND TAIL SKID STAY ILLUMINATED. RECYCLED GEAR W/3 DOWN GEAR LIGHTS BUT SAME INDICATIONS W/GEAR HANDLE UP AND OFF POSITIONS. RETURNED WHERE AN UNEVENTFUL LANDING WAS MADE. REMOVED AND REPLACED LANDING GEAR ACCESSORY UNIT. INSTALLED GEAR PINS AND OPERATED GEAR HANDLE. ALL GEAR INDICATIONS NORMAL ON GROUND. RETURNED TO NORMAL CONFIGURATION AND REMOVED GEAR PINS. AIRCRAFT RETURNED TO SERVICE.