As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 718 - ORD-IND - UPPER RIGHT BREAKER ON ENGINEER PANEL LIGHTING POPPED OUT, 7.5 AMP. RESET SAW SMOKE COMING OUT OF CABIN PRESSURE CONTROLLER, PULLED BREAKER OUT. REPLACED AUTO PRESSURE CONTROLLER. RESPLICED TERMINAL LEADING TO AUTO PRESSURE CONTROL BACKGROUND LIGHTS. (M)