How do I program a Tacan DME arc in to the FMC? I know some one has to know, thanks in advance.

Hi JeremyAs a starter you should do some reading in the FMC manual, from page 8 - 30. It's very well explained there how to define custom fixes. There are several ways to do this, but as an example, you can try to define fixes say every 10th degree along the ARC. Type it in to the scratchpad and lineselect it up on the left side where you want the arc.If the ARC is 8NM and the TACAN name is TACTAC180/8TAC190/8TAC200/8TAC210/8180-210 defines the radials. This is a bit trial and error, you have to work a little to get the desired smooth ARC. When done you can save the route for later use. As mentioned there are several ways to define fixes, this is well covered in the manual.Another option is to write you own SID/STAR file and define the ARC there. This is also well covered in Terry Yingling excellent tutorial available in the library

Thank you very much I knew there was a way to do it, I must admit that as far as the manuals for the new bird go they didn't get much more than a scan and at the time that was probably one of the things that got the super scan. I am going to the manuals now thank you.