Originally Posted by
lolairplanes
If I'm on my knee helping someone laying down on the ground, it would never be a problem during any landing in my memory.
What 'help' though do you have in mind? Have you actually been in this position or are you theorizing? I have been in many planes that landed where I doubt there would be many people who could remain stable on their knees with their hands actively performing another action (other than helping maintain the body's stability).