C of G,
never flew the green ones.
Diabolo,
catIIIa - still a scarry thought! did a few simulated ones in good wx. you wish, pray and cross your fingers that it's spot on!
it's probably a requirement by the customers these days.
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crew certification is the least problem. i heard from mx guys that it's fairly expensive to maintain. would be interesting to get
some more info on that from somebody who knows more.
probably a different topic again.