I prefer flying a Flybe Q400 than I did flying a TOM 757 last April to Italy. But I had that peril of a loud noise, seems that the A/C had an issue with the 'Q' aspect according to the report email I got back from their engineering dept. Very loud, made some of party sick, but I now fly with FlyBe religiously (mainly because only they fly there or their times are better) to some cities I travel to monthy.