On Mar 17, 10:35*am, wrote:
*But either seems to eliminate the possibility of parking brakes.

Without parking brakes, I'd have to use chalks. *

Hydraulic parking brakes seem to work fine on aircraft ranging in size
from a PA-28 to an MD-11. I can't see any reason they could not be
used on a trailer.

What are chalks?? Is this another common language thing?

Andy