Orval Fairbairn wrote in message .. .
In article ,
James Robinson wrote:

It is more likely that the screw jacks failed as a result of an
inadvertant throwing of the retraction switch. It isn't the first time
that has happened, and probably not the last!

The 172 drivers may snicker but those of us that drive retracts will
never make comments about gear ups. (knocking on any piece of wood I
can find).

-Robert