In article t,
"Steven P. McNicoll" wrote:

"Ron Garret" wrote in message
...

And there are no other possible ways to hit terrain?


None that are caused by use of a handheld GPS for IFR enroute navigation in
US controlled airspace.

What about the following scenario:

The pilot is holding the handheld in his hand (imagine that) and drops
it. While he is bending down to retrieve it he enters an unusual
attitude from which he is unable to recover.

Would that not be an accident that is caused (at least in part) by use
of a handheld GPS? It would not have occurred if the GPS were not being
used.

(For the record, I do not believe that the use of a handheld GPS
represents a significant risk, and in fact, IFR flight is almost
certainly safer with a handheld than without one, all else being equal.
But a yoke mount is advisable :-)

rg