Also, FlightPrep refer to a 2004 review of online flight planners from the Aviation Consumer magazine. So, I would guess they date their invention before that.

Also, FlightPrep refer to a 2004 review of online flight planners from the Aviation Consumer magazine. So, I would guess they date their invention before that. http://www.flightprep.com/rootpage.php?page=aviationconsumer http://www.flightprep.com/rootpage.php?page=aviationconsumer