As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING APPROACH INTO TYS, LANDING GEAR DOOR OPEN LIGHT REMAINED ON AFTER GEAR EXTENSION. CREW RECYCLED GEAR WITH SAME RESULTS. EMERGENCY GEAR EXTENSION PROCEDURES WERE UTILIZED AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED PSEU PROCESSOR. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.