Danger Area

The rear of an airplane both in the air and on the ground is a dangerous place. In the air you have to concern yourself with wake turbulance (not caused by the engines, but the wingtip vorticies). On the ground you have to worry about Jet and Prop blast.

This “danger zone” is different depending on the type (jet/prop) and size of the aircraft. Below is the areas around an airplane where jet blast is dangerous.

 
Jumbo Jet
Medium Jet
Executive Jet
 
Idle
Take-Off
Idle
Take-Off
Idle
Take-Off
Length
600ft
1600ft
450ft
1200ft
200ft
500ft
Width
250ft
275ft
150ft
80ft

A diagram is also available.