I just picked up the Ultimate Airliners MD-80 and DC-9 megapack from Flight1.   The graphics are exactly as they were in FSX (Surprise!) but the planes are still a joy to fly and the AP is very responsive.

yet I have a problem loading in a flight plan so I have been forced to navigate using HDG and can't use NAV, which is annoying at best.

To make things worse, Coolsky support is no longer offered on their "Legacy" products so I thought I would ask here in case anyone owns and flies these planes.

Details:

I followed the instructions in the DC-9 Classic Flight Center to load a flight plan:

1) Enter Departure ICAO  (KSEA)

2) Enter Destination ICAO  (KSLC)

3) Enter Flight Number  (220)

Name flight plan file as DEP-DEST-Flight#.pln   (in my case KSEA-KSLC-220.pln)

Then Hit ENT on PMS to load plan.  

I Always get the error "Route import incomplete."

I searched the Coolsky forums relentlessly and there were only 2 posts I could find that had anything to do with flight plans.

One Coolsky forum post claimed the Navdata for the DC9 was old and so I just used long existing VORs for my flight plan, no GPS waypoints   (YKM, PDT, BOI, TWF, OGD) to test that theory and got the same outcome.

One post asked where the flight plan should be placed and the reply from support was "in the same folder where P3D looks for plans" so I put it there and got the same result.

              Note: There are no Flight1 folders that were created during install that would be used for flight plans.  I created a couple and tried copying the plan there but no luck, e.g., Documents\Prepar3D5 v6 Files\Flight1\flightplans

 Any ideas? 

There is a thread in the forum here that tells you where you find the path for flightplans. I think as default it uses p3dv4 not v5 but you can change that.
Super 80/DC-9 Web Forums - Search Results - S80 pro fms_flightplan_path

In the Super80Pro.ini file, there should be a section that looks like this...
fms_flightplan_path=<your flight plan folder>

IIRC you will need to set it for each of the DC9, Super 80 and Super 80 pro ini files.

You can also use the Navigraph FMS upater to update the AIRAC for the Coolsky products - the path my FMS updater uses is C:\Program Files\Lockheed Martin\Prepar3D v5\Navigraph and the product being updated is described as Flight 1 Fokker/Super 80 Professional/C182T, DA Piper Cheyenne.

 

Edited December 20, 2025Dec 20 by simfan1983

THANK YOU simfan1983 for all of this great info!   Even though the link doesn't work for me, I think I should be all set.     

On 12/20/2025 at 3:05 AM, simfan1983 said:

There is a thread in the forum here that tells you where you find the path for flightplans. I think as default it uses p3dv4 not v5 but you can change that.
Super 80/DC-9 Web Forums - Search Results - S80 pro fms_flightplan_path

In the Super80Pro.ini file, there should be a section that looks like this...
fms_flightplan_path=<your flight plan folder>

IIRC you will need to set it for each of the DC9, Super 80 and Super 80 pro ini files.

You can also use the Navigraph FMS upater to update the AIRAC for the Coolsky products - the path my FMS updater uses is C:\Program Files\Lockheed Martin\Prepar3D v5\Navigraph and the product being updated is described as Flight 1 Fokker/Super 80 Professional/C182T, DA Piper Cheyenne.

 

Unfortunately, 2 of the 3 aircraft had no .ini file in their respective Simobjects\Airplanes\... folders.   The Pro had an .ini file but no entry for

fms_flightplan_path=C:\Users\<username>\Documents\Flight Simulator X Files   

I found an [FMS} section in this .ini file and placed the above entry into it but had no luck.   Still get "Error loading CO Route" on the FMS when putting    KPDXKSLC   into the CO Route field.

so I am unsure what "[Section]" this entry would go under.  None of the sections seem appropriate.

One forum post said there should be an [ACARS] section where there should be an entry like:

[ACARS]
acars_flightplan_path=C:\Users\<username>\Documents\Flight Simulator X Files

I tried this and no luck.    I also saw forums posts that said the flight plan needed to be in FSX format, which I am using based on FSBuild.

Other posts said the flight plan name needed to be like      Departure_IATA-Arrival_IATA.PLN    so    PDX-SLC.PLN    whereas others said   Departure_ICAO Arrival_ICAO.PLN   with no space between the two, such as you would use with the PMGD line.

No matter what I tried I could not get any of the 3 aircraft to load the route.

Can you tell me what the respective section name should be in the .ini files?

I also tried putting the flight plans into C:\Users\<username>\Documents\Prepar3d v4 Files     and that didn't work either.

The line fms_flightplan_path=<your flight plan folder> goes in the [OPTIONS] section of super80pro.ini. I wouldn't expect you to be able to load the flightplan into anything other than the super80pro as the others don't have the FMC. If you go to the Coolsky support forum and search on fms_flightplan_path with the date set to any you should find some threads from 2009. Unfortunately I don't currently have the line in my ini file as I reinstalled and never set things up again but I have had it working in the past. I think you are correct that it should be a standard pln format file. Do you have access to the forum? There is no longer support from Espen but I can still access all the old threads.

It should not be very difficult. I have used the coolsky MD80 with omega navigation for some flights, see here for how to load it:

 

Edited December 23, 2025Dec 23 by Blasb