As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOTH LT AND RT OVERWING EMERGENCY LIGHTS WERE FOUND INOP. INTIALLY ITEM WAS MOVED AND PLACED ON MEL 33-50-00-1. LATER IN THE DAY IN IAD MX R & R NR 4 EMERGENCY LIGHT POWER SUPPLY WITH OPS CHECK SUCCESSFUL. ACFT WAS APPROVED FOR RETURN TO SERVICE.