.rc4 files, what is the advantage?

[Guest CowlFlapsOpen]

I have about 30+ .rc4 files in my folder, one corresponding to every .pln I've processed through RC since obtaining it. I know one can save the flight at any point and resume later, but these are created automatically it seems. What are they for and when should I use them? If I have both a .pln and a .rc4 file with the sam name, should I use one over the other?

[jd 57]

they are the customizations that you make for the .pln (freq changes, notams, gates, etc)you can delete *.rc4 if you want?v5 we'll be doing something even better. stay tunedjd

[Guest CowlFlapsOpen]

thanks. Looking forward o v5!