It may depend on the field, but if you have an IFR arrival inbound on an
ILS approach, and an IFR departure waiting to take to the skies, the guy
on the ground is not going to be released. At larger airports where
they have more runways or larger distances separating incoming from
outgoing they can squeeze the timing a bit. From my home field (class
D) I know this to be the case.

Steven P. McNicoll wrote:

"Robert Chambers" wrote in message
om...

Sure it is relevant, until one IFR flight has cleared the part of the
airspace relevant to his departure the second IFR flight cannot be
released for takeoff.



Yes, but at a controlled field that can occur rather quickly.



For the same reason a plane holding for IFR release cannot take off until
the IFR arrival he's waiting for has either cancelled IFR or has landed.



Not true at a controlled field.