Exactly! I posted an example right above. I think we used something like 6 minutes total, but it was incredibly useful: The weather turned nasty, we called the pilot that was picking us up and changed our rendezvous to a place that was easier for all of us to get to. This was much easier than slogging our way though a flooded mess.

There's also a decent rental market for these phones, so one doesn't have to shell out thousands of dollars--you can get one for $50-75/week + airtime, which is a fairly minor expense if you are already going somewhere so remote you need to be flown in/out.