As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: LEFT HAND OVERWING ESCAPE GROUND EMERGENCY LIGHT DOES NOT WORK. FOUND LEFT HAND LOWER OVERWING EEL LIGHTBULB INCORRECTLY INSTALLED. REINSTALLED LIGHTBULB CORRECTLY AND PERFORMED OPERTIONAL CHECK GOOD. PER B737 AMM 33-51-04.