For rescue after an aircraft mishap... no - I want the impact-actuated
model.



For rescue while camping out of radio/cell line of site:

When the weather I didn't check turns bad.

The chart I didn't bring leads me astray.

A member of my party sustains injury that affects our ability to
transport them out.

I foolishly leave the scene of an accident to walk out.

That's when satellite-based communication is NICE.



An Iridium satellite phone and a hiker's GPS would work even better,
assuming I can dial a phone.



Cheers -