What was found
(CAN) AT APPROX. 5 MILES FINAL RUNWAY 16, AN EXECAIRE CANADAIR CL600-2B16 REPORTED A POSSIBLE NOSE GEAR PROBLEM. DID A FLY BY AND NOSE GEAR WAS NOT OBSERVED TO BE DOWN. DID A VFR CIRCUIT AND RECYCLED THE GEAR WHICH RESULTED IN A "THREE GREEN" INDICATION. AIRCRAFT RESCUE AND FIRE FIGHTING (ARFF) TO STANDBY AS PRECAUTION. LANDED WITHOUT INCIDENT AT 0011Z. NO IMPACT ON OPERATIONS. AIRCRAFT WAS JACK UP, SEVERAL GEAR SWINGS CARRIED OUT IAW 32-30-00 NO FAULT FOUND. FUNCTION TEST OF NLG. DOORS IAW 32-20-00 NO FAULT FOUND TIME GEAR RETRACTION/EXTENSION CARRIED OUT IAW 32-35-00 NO FAULT FOUND AIRCRAFT RETURN TO SERVICE FEW GEAR SWINGS WAS CARRIED OUT IN THE AIR NO FAULT FOUND.