Originally Posted by
Hacker15e
The USAF method as described by @Adlerdriver is the only one I know of. It requires a little practice, but is actually very effective.
Unfortunately, since the FAA no longer does radial/DME fix-to-fix, neither does the USAF, and this technique is no longer taught.
Hey Hacker,
How about an F-15 specific method (probably works in other fighters too):
If you have an INS destination that is the same location as the TACAN you're using (like maybe home drome), select that as the steer-to so you get bullseye info on the VSD. Turn to put the general vicinity of the fix you want to go to within the coverage of your VSD (or I guess you could even use the SIT display for fixes behind you). Now move the acqs symbols over the desired fix using the bullseye info and figure the required heading based on current heading and position of the acqs symbols in degrees off the nose using the BRA info.