easyground-effect
Ground effect is significant when the aircraft is within approximately:
A
One wingspan or less of the surface
B
5 wingspans of the surface
C
10 wingspans
D
Any altitude below 1,000 ft AGL
Checking member access
One moment while we confirm your plan so paid members never see checkout by mistake.
Checking member access before showing upgrade options
Keep practising
Take a timed quiz with random questions, or estimate your training costs.