As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PACK TRIP OVERHEAT LIGHT ON LANDING ALTHOUGH WE HAD SECURED PACK WITH NORMAL CONFIGURATION. SMOKE IN COCKPIT. PACK TRIP DUE TO LOSS OF NR 4 GEN BUSS. RESET BATTERY POWER SWITCH. PERFORMED ADJ/TEST IAW MM 21-55-00-5. RAN ENGS SYSTEM OPS CK GOOD.