Going back to what
Drunkenspleen said on page 1, the rules for Swooping on page 49 are pretty clear:
If a Flying Monstrous Creature is Swooping, it moves exactly like a Jump Monstrous Creature, with the following exceptions and clarifications: ...
So
if a
FMC is forced to Fall Back, it would Fall Back
3D6" as per the rules for Jump Monstrous Creatures.
Can a Malediction "hit" a Swooping
FMC?
RAW,
yes, it can. It is not a shooting attack or shooting psychic attack. You simply need to be in range of the intended target. If you pass your psychic test, you can use your Malediction against any enemy unit in range. Your Malediction doesn't even need to be able to hurt it (
FAQ example is Hallucination can target a Vehicle but won't actually have any effect).
So you could use a Malediction against a Zooming Vendetta if you really wanted to. Other than Misfortune and Objuration Mechanicum I don't think there's any
BRB powers that would work. Maybe Dominate, but I'm pretty sure you can't force vehicles to take a Leadership test.

I think they count as
Ld 10 for Psychic Powers if they have the Psychic Pilot rule but that was it.