Hi Trades,
Yup, Wear your "seat belt" !!!! Ceejay can explain that one better than I, assuming you are talking about a "sudden downdraft" !! And, the airplane really didn't fall at all, the "sky just 'moved' " and the airplane just kept chugging along !!!!
You'll find this post later, when Mike manages to delete/block all the crap those "freaks" are posting !!!
Take care,
Lee