To view your Tacan information on the HSI you will need to
put this in the TCN position.
From Selected Tacan Station
This is self-explanatory it displays the amount of
miles from the currently selected Tacan station.
red arrow is pointing in the direction of the currently selected
Tacan station. Simply line up the little picture of the plane
(in the centre of the HSI) with the red arrow. You will then
be flying directly to the selected Tacan station.
these simple steps to navigate to an airfield using Tacan.
the CNI switch to BACKUP
the TACAN Function Knob to the T/R position
in your selected Tacan station on the TACAN Station
the HSI, move the Mode Switch to the TCN position
distance from the selected Tacan station is now displayed
and a Red Arrow will be pointing in the direction of
the selected Tacan station.
your mission brief, it is a good idea to jot down your home
plate and divert field Tacan channel in case you lose your
primary navigational system. This will help you to return
to a friendly field quickly and accurately.
stated earlier, Tacan can be used to obtain a variety of other
navigational information. The CNI function is useful for lining
up with the runway and the Tacan ILS is useful for getting
on the correct glide slope (this does take some practice but
it can make the difference between a good landing and a bad
one when youve got no HUD). If you wish to study these
other functions, the F4 manual covers the subject quite well;
training mission 10 pages 3-7 to 3-13 is excellent for learning
a document with all Tacan channels listed.