"Stan Gosnell" wrote in message
...
(Robert M. Gary) wrote in
om:

How do you differentiate a VOR from an airport when filing? What is
the difference between SAC and SAC, what is the difference between
SMO and SMO, etc.


In the US, put a K in front of the airport identifier. KSAC is the
airport.


That's fine, but unnecessary. The position in the route indicates whether
it's an airport or navaid. If you filed SAC..SAC..SMO..SMO, for example,
the first and last fixes are assumed to be airports. Northwest Airlines
provides service from Green Bay to Minneapolis. About half their flights
are filed GRB..GRB.EAU6.MSP, the rest are filed GRB.EAU6.MSP. GRB VORTAC is
about five miles northwest of the airport but the flights are treated
exactly the same