"Roy Smith" wrote in message
...

Well, there is always the human factor.

I remember one night I was up shooting practice approaches, when NY
Approach was calling out 757 traffic to everybody, along with the warning,
"he's not talking to anybody". I can only assume somebody in the cockpit
fat-fingered a frequency change. Being on the wrong freq is effectively
lost comm. It's probably something which you'll be able to resolve
eventually, but when you get to the fix and you're not talking to the guy
who gave you the paper stop, you've got to figure something out.


Well, if you're familiar with FAR 91.185, you'll leave the clearance limit
upon reaching it. So what's to figure out?