As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER COMPARTMENT ILLUMINATION REPORT EMERG WINDOW (SIDEWALL) LIGHTS SYMPTOMS OR PATTERNS ALONG WITH FAULT CODE SIDEWALL LIGHTS AT ROWS 20/21 ON BOTH SIDES FLICKER ON/OFF. REPLACED EMERGENCY EXIT DOOR LAMPS AT SEATS 20-21 CDE OPS CHECKED NORMAL.