As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INSPECTION TYPE:N/A ATB - IMMEDIATELY AFTER T/O SMOKE WAS SENSED IN C/P. SMOKE WAS COMING FROM THE AREA OF WINDOW L1. WINDOW HEAT WAS TURNED OFF. RAN CHECKLIST. FUEL WAS JETTISONED TO LANDING WT AND FLIGHT RETURNED TO ANC. FOUND TERMINAL-A LOOSE. REMOVED OLD O-RING. INSTALLED ALTERNATE O-RING PER GMM 3-6-9. OPS CHECK NORMAL IAW MM 30-41-01.