[raducu]

Modafinil especially with coffee absolutely feels like a clasic stimulant IF I've taken a long enough tollerance break.

I see only benefits -- maybe I'm a little bit too talkative and too many things seem interesting/worth exploring/doing, but for a pilot, that would he detrimental, I'd think.

[pc86]

It's disqualifying by the FAA for general aviation as well, the argument being that you need to be able to quickly react to changes and not get "locked in" to monitoring/doing one thing.

I've never taken Modafinil so I have no idea how much that jives with the actual effects, but there have been some people who have gotten waivers if the usage was long enough in the past. Personally I don't see why it can't be like alcohol (if you haven't had it in the last n hours/days, you're good to go).