As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EWR---CO3223, CREW REPORTED, GEAR NOT DOWN WARNING IN FLIGHT AT 4000 FEET. STARTED DESCENT AND PULLED POWER LEVERS BACK TO FLIGHT IDLE. AIRCRAFT LANDED UNEVENTFULLY IN EWR. MAINTENANCE INSPECTED AND PERFORMED BITE MEMORY RECALL TEST ON THE PSEU REFERENCE ATR42 MM 32-61-83. NO FAULTS FOUND AND AIRCRAFT RETURNED TO SERVICE.