Airbubba :
most flight plans these days are uplinked over the radio using data protocols that are claimed to be notoriously insecure
Thanks for the reply . But
AFAIK a Flight plan is strictly coded: waypoints , 5 letters codes. DCT, etc... Outside of these I believe it is only Lat/long and Distance in between. Tedious work to make a Xmas tree no? . Plus I would not know how to enter a perfect 360 on a flight plan
