CoolP wrote on Nov 18^th, 2010 at 7:07am:

I always load my flight plans in the INS only, so even if there was a hidden GPS unit, it wouldn't know where to fly to. But, we can easily check if there is such a thing: Open the panel.cfg and look for any "gps" unit there (should be a gauge then). You won't find any, so I think you are seeing something different here. Maybe the Doppler gauge uses some kind of function here while the INS is completely independent by design.

I'm like you CoolP. I don't like loading the FS Flight Plans into the 707 unless I'm forgoing the INS or DNS and flying the FS Flight Plan only (rarely).

The DNS requires the dpl.pln (which is an FS Flight Plan) to function, so it loads that flight EVERY TIME you load the 707.  That means there is always a flight plan there for the 707. I'm sure that if you use INS or DNS, it overrides whatever the plan is loaded from there and put into the "hidden GPS unit". I loaded an FS Flight Plan as well as set it up and flew it with both the INS and then the DNS. It always followed the entries in the Navigation System I was using. Even if you enter a waypoint wrongly and your 707 starts heading towards Timbuktu even though you didn't mean it to. YES. That's right folks. I screwed up and did not check my INS flight plan correctly. TWICE. :-[ The last time, I loaded a flight from YSSY to YPPH into the INS when I meant to load YMML to YPPH and wondered why on earth my flight was heading North East instead of West once I set the A/P to NAV. Boy didn't I feel like an idiot when I realized what I had done. Lucky for you lot, I won't repeat what I said (quite loudly) when it dawned on me what I had done.

Mark