smf wrote:
"Dave S" wrote in message
link.net...
To fly IFR in controlled airspace you must have a clearance.

To have a clearance you have to file for it.

You can file by phone, computer or radio, but you must file it.

Where does a "pop-up" clearance fit into this?

You file an abbreviated plan with ATC...the first part of
the rule for IFR plans says "Unless authorized by ATC..."