OK...here's what we have so far...(sorry this took so long...)
1)flyers can count as heavies so you don't lose yer structure points...however there is a limit...SH flyers can have up to three...no more...less if you wish...
2) they do not qualify as warmachines so they are limited to super heavy and the rules that apply under the VDR...completely different rule set designed specifically for flyers
3) their style of combat is attack run...which means they only fly on then fly over then fly off...the VTOL can not be given to flyers...period...regardless of race
you may make it a lander but not a VTOL...no loitering over a target
4) they may have 1 shields per structure point...which give it a 4+Inv. save against all attacks from the front side and rear...not from the bottom or top...so if yer shot at by say troops on yer attack run from the ground...then it is considered a belly attack...work out the shot against the sheild as normal...any vehicles shooting are considered to be shooting at one of the facings...and if it's say an Imperial fighter...(or the like) then the attack is at the discretion of the opponent...
5) they may not tank shock and are counted as either fast attack or heavy support...(in yer case..Heavy support)
6)all shots against it hit on a D6 roll of 6, during it's run, are considered glancing...however any thing over immobilised as a damage result and it's so long nice to see you (crash and burn baby)...
hope this helps...will have more when I look through the apoc book
if you haven't already...LMAO