What happened
On the morning of November 14, 1988, an Embraer 110 Bandeirante, registration OH-EBA, crashed near the Ilmajoki aerodrome during a scheduled flight. The aircraft, owned by Karair Oy and operated by Oy Wasawings Ab, was destroyed upon impact with the ground.
The accident resulted in four fatalities: the captain, the co-pilot, and two passengers. One passenger died from injuries sustained a week after the crash. Two other passengers suffered serious injuries, while the remaining four passengers escaped with minor injuries.
The investigation
An investigation committee was established by the Finnish government to examine the sequence of events, the causes, and the consequences of the accident. The investigation involved technical analysis of the engines and propellers, conducted with assistance from the Canadian Aviation Safety Board and Pratt & Whitney engineers in Canada.
Investigators examined the aircraft's control systems, landing gear, and engine components, including detailed metal fatigue and oil analysis. The investigation also reviewed the radio navigation equipment at the Ilmajoki aerodrome and the operational procedures of the airline and the airfield management.