As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3749 THE CREW REPORTED 2 BULBS IN THE EMERGENCY ROW EXIT SIGN IN THE WALL ARE BURNED OUT. AIRCRAFT REMOVED FROM SERVICE. PERFORMED OPS CHECK OF LEFT SIDE EMERGENCY ROW EXIT SIGN IAW AMM 33-51-17. OPS CHECKED GOOD. THE BULBS MAY HAVE BEEN JUST LOOSE. AIRCRAFT RETURNED TO SERVICE.