Hello!
Sorry to post this question but I think I read the topics dealing with INS and Doppler, but found no solution... (and I'm new to the 707)

First of all if I follow the steps described in this forum (and the manual of course) to set up and use Doppler, the autopilot always directs me to hdg 360 and "miles to go" reads 0. So basically I can't use Doppler for navigation no matter what I try.

Now and then the INS will also refuse to work as expected. Until takeoff it is aligned and running fine, but then its current position suddenly is off by several hundred miles thus turning the aircraft into a false direction. I tried to update the position via DME, but also with no success (INS updating panel not present, so maybe an installation fault?).

Any ideas how to fix these problems?
thanks

Hi! Dont be sorry for asking, or this forum will be useless

About Doppler. Make sure you turned it on. Switch located on overhead panel. It have states off, rec, on, test (if i remember correctly).

then set DNS control panel (near the radar) to Standby. set range and heading for A and B slots (leg 1 and leg 2 of your route) Slot selector should be in neutral position.

Check that INS switch is in Doppler position (It located on Captn panel below altimeter)

Then ready to use DNS, switch it from Standby to MAN of AUTO mode. and then select slot A or B (depends where you put leg 1)

Turn on autopilot, and select NAV hold mode.

DNS should work.

A couple of notes.

DNS starts to track your route after you switch it to MAN or AUTO mode, and select slot.  Autopilot will track that route. So switch it to say, AUTO, and right after that Slot A. And right after that turn on A\P to NAV mode. it'll work.

It is better to takeoff, then track direct to VOR. And start to use DNS then flying over that VOR. Same for arrival. Fly DNS. Then inrange of destination airport VOR, switch to VOR nav.

If you set DNS to MAN mode and then decided to go to AUTO mode - Switch it to Standby first, reset legs. And then set auto.

Have a nice flying! Ask questions if you have any

Here short fast-shooted vid. Sorry, forgot to record mouse position.

http://youtu.be/b1KApDPNrJU

Turning on DNS on overhead, selecting Land mode.

Taking off

Setting STAND-BY mode

Setting 2 legs

Switching DNS to AUTO mode

Selecting leg A

it flies selected route.

then approaches waypoint, and switching automatically to leg B

If it doesnt work that way, - something messed up in installation i think.

Hm..Thats strange. Are you sure that you didnt mess accidentally some gauges, when installed CIVA INS?

Or one more idea. Check if some key mapped to GPS\NAV function in FSX\Controls\Buttons. Maybe it in GPS state. It could be set by other aircrafts, and left in this state.

Well, i think repairing the installation can be a good idea. Dont forget to back-up panel.cfg with INS installed.

And btw what version of FSX you have?

WAIT! You gotta dig minimums for 707.
We had some A\P problems on 727 because of that.

i got Acceleration. I'll check now.

No luck after reinstalling the 707, Doppler still refuses to work.

Check and see if there is a dpl.PLN (flight plan file) in your Documents\Flight Simulator X Files folder. If it is missing, the Doppler Navigation will not work.

Mark