What was found
ON APPROACH, THE NR 1 FIRE LIGHT ILLUMINATED AGAIN. WHEN THROTTLE WAS PULLED TO IDLE, THE LIGHT EXTINGUISHED. ENG COMPARTMENT WAS INSPECTED FOR SIGNS OF FIRE & NONE WAS NOTED. THIS IS AN ONGOING INTERMITTENT ISSUE. WIRING, BLEED LINES, FIRE LOOPS HAVE BEEN CHECKED WITH NO FAULTS NOTED. A GND RUN DUPLICATED THE ISSUE FOR ABOUT TWO SECONDS DURING START. LIGHT THEN WENT OUT & WE WERE UNABLE TO DUPLICATE AGAIN. TROUBLESHOOTING CONTINUES. A FOLLOW UP REPORT WILL BE FILED USING THIS SAME CONTROL NUMBER.