Table 2.

Main reasons for air taxi accidents.

Cause of Accident	Study
Human error	[33,34,35,36,37,38,39]
Equipment failure	[33,35,36,40,41,42]
Crew and passengers	[33,43]
Airport	[33]
Lack of data	[30,37]
Weather	[14,28,30,33,35,37,44,45]
Collision	[35,44]
System attacks	[35,40,42,46,47]