What was found
AIRCRAFT RETURNED TO GATE AFTER EMERGENCY LIGHTS AFT OF WING CAME ON, THEN WENT OUT. REPLACED SWITCH AT DOOR 4L AND TESTED OK.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT RETURNED TO GATE AFTER EMERGENCY LIGHTS AFT OF WING CAME ON, THEN WENT OUT. REPLACED SWITCH AT DOOR 4L AND TESTED OK.