JGalban via AviationKB.com wrote:
RST Engineering wrote:
No chocks, only tiedowns could have kept that aircraft from moving.


Chocks aren't perfect. At my home field we often get violent downbursts
from thunderstorms in the summer. Peak gusts of 60-70 kts aren't unusual. I
use both chocks and tiedowns, and I've found that after a particularly bad
storm, the chocks were often blown away from wheels and the plane was sitting
slightly sideways with the tiedowns pulled tight.

Yes, chocks are temporary restraints and no better on ice than are the
tires and brakes. Tie downs are the only way to go for permanent
restraint (other than a hangar!).

Matt