I am trying to setup the IACO info in fltplan.COM and not coming up with the IACO identifier for the kitfox? I tried FOX but its saying its not valid. When I go to the link below it shows it as FOX. Anyone ever file a flight plan and what is the IACO identifier you used? I have a message into fltplan.com to see what they say. Maybe its something internally in their system?

https://www.icao.int/publications/DO...es/Search.aspx