A/ P works well with INS and Doppler. Yesterday, I have to turned off the INS during the flight. Surprisingly,  A/P maintained flight plan with out INS or Doppler active.
During  return flight I loaded only flight plan and engaged  the NAV mode. A/P followed the flight plan " TJSJ-KJFK" with out any problem.
I wonder if  there is a hidden GPS in 707 navigation program. IF there is,  it will take away charm of INS and Doubler navigation system .

Sanal

Mark,
I just completed a new flight from KJFK to KDAY FSbuild flight plan with out activating INS and Doppler, A/P flew entire flight plan in NAV mode.
That is exactly like 727 with GPS/NAV switch. It looks like I don't need NAV/GPS switch in 707.
Please test your self.
Sanal

Mark,
" Are you loading your FSBuild flight plan via the FS Flight Planner?"

Yes.

I just made a final test flight KPVD-KILM  FSflight plan loaded and A/P Nav Mode engaged. 17 way-points Flight completed with perfect navigation through A/P NAV mode.

There is no NAV/GPS switch in 707 and not needed.
I am sure there is a hidden GPS system in 707 Navigation. Nothing wrong to have it, but INS/Doppler will loose priority for navigational preferences.

Sanal

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

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

Hi Sanal.

There is a flight plan converter that converts FS Flight Plans into CIVA INS flight that you can load into the INS. Get it here.

A few things you need to know for the converted Flight Plans to work correctly.

1. The converted Flight Plans must be saved in the FSX\civa\ADEU folder.
2. You must save the converted file in the above location BEFORE you start FSX or you can't see them with the INS and so that means you can't load them.
3. A text file is made with the same name as the saved flight plan name which guides you to when you need to load the next part of the flight plan. Keep it close at hand when doing your flight.

Mark

The difference is this.

1. IF you load a flight plan into FSX using the FS Flight Planner, you don't need INS or DNS. But...If you fly an INS or DNS plan DON'T load one using the FS Flight Planner. Here is how I do it:

If I'm flying a DNS plan. I have a peace of paper that gives me the heading and distance between waypoints, that I have to set for each leg of my flight (can get tricky when waypoints are close together).

If I'm flying an INS plan. There are two ways to do it. One is with the Plan Converter witch I just load into the INS at the correct times (pretty easy). The other way is that I have a piece of paper with the waypoint co-ordinates written down, that I need to enter as the INS allows them  to be entered and this can also be tricky when waypoints are close together.

When flying a DNS or INS flight plan in the 707, I do not load a flight plan into FSX using the FS Flight Planner. It has been a long time since I flew an FS Flight plan in the 707. There is no harm in doing it in any of those three methods that you prefer. Whichever way makes you happy is the way you do it.

Mark

I talked about this in another thread about the INS waaaaaaaaaaaaaay back. If you load a FSX FP after you are in the sim, you simply use the NAV AP function and it tracks it just like you were using a GPS. As I recall there were a few comments after that about 'why would I want to, its not realisitic".

My reply was I upgraded my avionics    So yes asanal, you are correct sorta, no actual GPS but it will track a FP just fine without programing the INS.

CoolP

I tested with FsBuild and FSX flight plan. Boths works perfect.

I suggest the following for your test flight:
1- Open FSX
2- Select 707
3- Open Flight Plan and create one
4-Save fight plan
5- Click Fly
6- 707 ready
7- Receive you ATC and Taxi clearance
8- Takeoff
9-Transition to first way point
10=turn A/P mode to NAV
11=Here yo go..., Fly with most sophisticated 707 navigation system