My first (and only, as far as I know) was in the back of a CJC 1900. I was flying, and even with the YD on the plane was wagging its tail like a dog about to get a biscuit. Gusty winds and drafts, there were.
I was standing at the bottom of the stairs and a passenger walked out clutching a sick sack.
I imagine looking up the isle and right out the front windscreens didn't help, watching the horizon slide left and right like that....
