As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHT AND BACK EXIT SIGN FLICKERING IN FLIGHT. INSPECTED BRUSHBLOCK WIRING AND CONNECTORS. NO DEFECTS NOTED. REMOVED AND REPLACED THE NR 1 & 2 ENGINE BRUSHBLOCKS IAW MM 61-10-11. OPS CHECKED GOOD IAW PDT -8. RAN MANUAL. NO FLICKER OF EMERGENCY LIGHTS DURING RUN.