Mxsmanic wrote in
:

F. Baum writes:

As it relates to the OP, the parking brake is never relied upon and
the plane is always chocked with or without the brake on. An airline
does not tow an airplane without a qualified person (Either a pilot
or mechanic who has been checked out for towing) in the front seat.

I don't understand how a small pair of chocks can hold an aircraft in
place.

That's because you don;t fly, fjukkwit.


Bertie