As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ABE- FLIGHT 3521. CREW REPORTED EMERGENCY LIGHTS FLICKERING ON AND OFF. MAINTENANCE INSPECTED WIRING AND FOUND PIN-B AT CANNON PLUG 9811P45 PUSHED BACK AND NOT LOCKING. PIN REPLACED. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.