As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING INSPECTION, THE UPPER AFT ILLUMINATED PLACARD FOR THE RIGHT OVERWING ESCAPE HATCH WAS FOUND TO BE INOPERATIVE. MAINTENANCE REPLACED THE NR 5 DC TO AC INVERTER. OPERATIONAL CHECKS OF THE UPPER AFT ILLUMINATED PLACARD FOR THE RIGHT OVERWING ESCAPE HATCH WERE GOOD WITH NO FURTHER DEFECTS NOTED.