What was found
DURING CRUISE FLIGHT, THE T/R CHIP LIGHT ILLUMINATED. THIS AIRCRAFT HAS NO FUZZ BURNER FOR THE TAIL ROTOR GEARBOXES. NOR IS THERE DIFFERENTIATION BETWEEN THE IGB AND THE TGB. THERE WERE NO OTHER INDICATIONS SUCH AS VIBRATION, OR LOSS OF CONTROLLABILITY. I DIVERTED TO THE NEAREST AIRPORT KSNS THAT WAS ABOUT 6 MINUTES AWAY. I CALLED OUR COMMUNICATIONS CENTER AND TOLD THEM OF OUR EMERGENCY STATUS, OUR NEW DESTINATION, AND THE NEED FOR AN AMBULANCE TO MEET US AFTER LANDING FOR OUR PATIENT BEING FLOWN. I CALLED THE TOWER AND DECLARED AN EMERGENCY AND MADE A NORMAL APPROACH AND LANDING, FOLLOWED BY A NORMAL SHUT-DOWN.