What was found
PRE-FLT 7970 - IAD - EMERGENCY LIGHT INOPERATIVE. MAINTENANCE REINSTALLED THE SIDEWALL EXIT IDENTIFIER SIGN. OPERATIONAL CHECK WAS GOOD. WD:IN HD:O (A)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
PRE-FLT 7970 - IAD - EMERGENCY LIGHT INOPERATIVE. MAINTENANCE REINSTALLED THE SIDEWALL EXIT IDENTIFIER SIGN. OPERATIONAL CHECK WAS GOOD. WD:IN HD:O (A)