Then they give the radar back to the center for the night. No radar
facility has to call center for a release under normal circumstances.
Some things that may pop up that require a call are weather or accident
related ground stops and ground delay programs. A loss of automation
can also necessitate a call for release program.




Sam Spade wrote:
Newps wrote:



An IFR tower doesn't call for release.

I have been reviewing the transcript and actual tape of the Lexingon
tower during the period pertinent to the crash of Comair 5191. The
tower controller called the center for a release for each IFR departure
on the tape.