Nose wheel shimmy

[Pmerems]

I thought I had seen some bad nose wheel shimmy videos, but I think this one takes the cake.

Check your nose wheel and fork preload.

https://www.youtube.com/watch?v=9FEc42othx0

 

[rightrudder]

I did my training in a rental DA-20. A marvelous aircraft in most respects, but I had a couple of episodes of violent shimmy. Keeping the nose wheel light with aft stick seemed to help, but even then it would surface occasionally. Dunno how well the A&Ps kept up on preload, etc.

Early in my training, I was guilty of letting the nose wheel down too early after touchdown, which is the worst-case scenario.