As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DCA - WHEN THE 'NO SMK/PED' SWITCH IS TURNED OFF, THE RIGHT OVERWING EXIT SIGN AND OVERHEAD EMERGENCY LIGHTS FLASH ON AND OFF INTERMITTENTLY. WHEN THE 'NO SMK/PED' SWITCH IS TURNED ON, THE RIGHT EXIT LEFT OVERWING SIGN IS OFF. MAINTENANCE REPLACED THE RIGHT EMERGENCY POWER SUPPLY UNIT. OPERATIONALLY CHECKED OK. (M)