Every so often the AP will essentially abandon the flight plan and start turning.  Why?  I had the plane descending via the WAYVE ONE STAR into KLAX and had connected the UPDOC waypoint to MERCE.  I checked the format page and removed any duplicate fixes.  It was looking good.  Then, all of the sudden the flight plan disappeared and the plane made a hard bank right.  I had to disconnect the AP and correct the action using DTO in the FMC.

 

I also no longer get the ARM APP option in the NAV page.  Using latest update, version 1.018e.

 

 

Then, all of the sudden the flight plan disappeared and the plane made a hard bank right. 

 

I've had this occur when the flight plan hits a 'manual' or 'vector' entry.   I try to keep my heading set to the current path so I can use HDG to put the aircraft back onto some track, while I do the DTO stuff.  That way I don't have to disengage the AP

 

With the 1.018e I do get ARM APP, but not consistently.   Maybe someday I'll figure out what I'm doing incorrectly, or correctly those times I do get it to work.  :smile:

 

Ernie

Ernie's description is accurate, though I don't think that is the problem that you're experiencing.  I think that there isn't a NEXT waypoint in your NAV page.

 

If it's the Nav page... It's important to remember that the Dash FMS does not fly off the Flightplan page, but instead flies off the NAV page, and if you make changes in the flightplan that include the present or next waypoint, you'll have to remember to manually update you're NAV page.

 

I hope this is helpful to you.

 

My very best wishes.

I didn't realize that the NAV page needed updating.  That is weird.  I have to admit that the FMS in this bird is a real thorn in my side.  It's so counter-intuitive compared to a Boeing.

 

I need to watch more videos, like flightsim481's FMC challenge video. 

Chris,

 

Believe it or not, once you learn it, you'll love it.  I've been flying the Dash 8 Pro for about 6 years, with thousands of hours and still love it.

 

Plus, it's the only aircraft in all of flight sim that truly flies like a real aircraft.  Stick with it!

 

 

Best wishes.