As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LAS - EEL - NR 3969026 - DURING INSPECTION MAINTENANCE REPORTED THAT THE EMERGENCY LIGHT TEST FAILED AND WAS FAULTING THE FORWARD LEFT EXTERNAL LIGHTS. FOUND THE L1 DOOR ESCAPE SLIDE PLUG LOOSE. RE-SECURED PLUG, EMERGENCY LIGHT OPERATIONAL CHECKS WERE GOOD.