What was found
ORD - FLT 4153 - EMERGENCY EXIT SIGN AT MAIN CABIN DOOR DOES NOT ILLUMINATE. REMOVED AND REPLACED EXIT SIGN. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
ORD - FLT 4153 - EMERGENCY EXIT SIGN AT MAIN CABIN DOOR DOES NOT ILLUMINATE. REMOVED AND REPLACED EXIT SIGN. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)