What was found
UPON OUR FLIGHT RETURN TO BASE, THERE WAS A BEEPING IN THE HEADSET THAT SOUNDED LIKE THE FIRE WARNING GOING, BUT THERE WAS NO LIGHTS OR ANY WARNINGS, AND COULD CANCEL THE GONGING ONLY TO HAVE IT COME ON AGAIN AND INTERMITTANTLY, CONTINUED MONITORING ALL OTHER INSTURMENTS AND FLEW BACK TO MARKHAM WITH NO OTHER OCCURANCES REPORTED TO MAINTENANCE