Nigeria’s Accident Investigation Bureau said Friday that an initial review of the cockpit voice recorder of the Embraer EMB-120 Brasilia that crashed on takeoff October 3 at Lagos confirmed an automated cockpit voice warning alerting the crew to a possible problem before liftoff. The system called out “takeoff flaps, auto-feather,” indicating that one engine might not have been producing takeoff power. At this time it is unclear whether the warnings were made before the aircraft reached V1 rotation speed.