bagsy31 wrote on May 6^th, 2015 at 9:23pm:

Hi, I'm hoping someone can help me loading a Flightplan in thw FMC. 777v1.6 FSX Steam Edition I have created a flight plan using the FSX Planner and saved the PLN file in \Program Files\Steam\SteamApps\common\FSX\Captain_Sim\navigation\routes. In the FMC I select RTE then SEND but no routes are listed. I created a copy of the route and saved as a *.RT file. That was listed in when I opened the FMC again - but FSX crashed as soon as I selected it. I would post a copy of the plan but don't have permission to add attachments or create a new thread. Thanks

Save flight plans made with the default FS Flight Planner to Documents\Flight Simulator X - Steam Edition Files.

To open/use them in the CDU/FMS, on the RTE 1 page, select SEND, then select FLTSIM FPLS (all your .PLN files should be visible on the CDU) and load your flight.

To save the flight plan as a .rt file, save it using SAVE, which appears after you ACTIVATE the route.

Changing the extension on a .PLN file won't make it an .RT file, which is why FSX-SE crashes when you load it. ;)