What was found
ON TAXI OUT, NR 4 THRUST BRAKE LIGHT START FLASHING. UNABLE TO EXTINGUISH IT. TAXI BACK FOR MAINT. CLEANED MICROSWITCH AND LUBE NR 4 ENGINE THRUST BRAKE IAW DC8 M/M 78-30-0, OPS CHECK NORMAL.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ON TAXI OUT, NR 4 THRUST BRAKE LIGHT START FLASHING. UNABLE TO EXTINGUISH IT. TAXI BACK FOR MAINT. CLEANED MICROSWITCH AND LUBE NR 4 ENGINE THRUST BRAKE IAW DC8 M/M 78-30-0, OPS CHECK NORMAL.