This paper examines factors that have influenced the average accident rate per million departures in Taiwan
from 1985 to 2011 involving turbojet aircraft hull loss. Our analysis is based on the nature of rare events,
used to find the importance of the International Civil Aviation Organization occurrence categories. The
most significant occurrences were in order of importance are: takeoff, landing, and ground operations;
aircraft; miscellaneous; weather; and airborne. The subcategory of runway incursiondvehicle, aircraft, or
person was the most significant effect for accidents; runway excursion for serious incidents; system/
component failure or malfunction in non-power plant; turbulence encounter for occurrences; and
controlled flight into or toward terrain for fatal accidents.