On 19 Jun, 17:58, Bruce wrote:

If they don't hear from you cancelling the PAN (Possible Assistance Needed )call all the expensive stuff will start on
the assumption that it is no longer a possible, but an actual "assistance needed" situation - but you won't be on the
hook for futile expenses.


That's what will happen if you make a pan-pan call before descending
to a height where you can't cancel it.

Ian