Newps wrote:




An IFR tower doesn't call for release.

This is from the NTSB ATC Chairman's report about Comair 5191 and
confirmed by the transcript and ATC tape:

"At 0447 (UTC), all LEX tower and radar positions were combined and
being worked from the local control position in the tower cab. In
addition to those functons, the tower controller was responsible for
obtaining releases from the Indianapolis (ZID) Air Route Traffic Control
Center (ARTCC) Traffic Management Unit (TMU), and recording the ATIS
broadcast and all other operational and administrative duties required
of a tower/radar facility."