It is a GK Storm Raven And rule for Shadow Skies and Skies of Blood I would assume are different. So the real question is does Zooming count as moving flat out?
As far as I can see, just looking at both rules, they are worded the same (with the exception that it says Jump Packs for BA [and they can use DoA to scatter less], and Personal Teleporters for GK.
Technically, Zooming flyers are Zooming, and you Flat Out in your shooting phase, so a literal RAW interpretation (pre BA FAQ), would be that you Zoom in, forgo your shooting and Flat Out, and then during that extra "Flat Out" movement would be when you Shadow Sky/Sky of Blood out.
The BA FAQ says "“If the Stormraven has moved more than 6", passengers can still disembark, but they
must do so as follows.”
Which makes absolutely no sense because a Zooming Flyer *has* to move 18" or it blows up.