On Mar 16, 4:09*am, Bruce wrote:
Anecdotes make poor proof of thesis.

However - you are correct that the ultimate cause of the accident was
poor maintenance of the hook.
But - the failure mode is one the Tost/Ottfur does not have.
They cannot rotate in a horizontal plane around the mounting bolt.

If yours is welded on - good, if it is inverted - better. If not, as on
the Cessnas - your daily checks should include whether there is enough
friction to prevent rotation around the mount bolt.

If it does rotate it will back release. It is unlikely to do this at a
peaceful, stable moment in the tow.


I've never heard of this happening, until now. Can you elaborate. Was
the towhook rotated around backwards before the tow started?