"Tina" wrote in message
...
I think you're in a lot of trouble when a primary gauge is a piece of
yarn taped to the windscreen!

I have seen yaw strings on military heavy iron, both fixed and rotary wing.
The main reason we don't use yaw strings on SEL is that pesky front-mounted
propeller kinda messes with the airflow around the windscreen. (Step on the
ball, step away from the string)

Vaughn