Please explain further: do they stay out and don't retract? Assign a button for retraction
Do you have an analog axis as input for speedbrakes?
I just checked the A320: speedbrake worked fine there.
I've just rechecked most of the aircraft... well... the ones with air brakes anyway. The Q400 comes up with the air brakes extended. They do seem to go down when in flight although I'm not quite sure if you could get into the air with them extended in real life? All others I can't extend them at all. I saw the post by the guy who says it works when assigned to a slider... I might give that a try once the update is cleaned up a bit. The number of other problems reported seems to be growing so I expect we will be seeing a updated update before long. (At least I hope so.)
Last night the added C172 with the shut down capability and opening doors & windows was all weird and unusable but the Robin worked fine. Today both are dimmed in the aircraft selection screen and they have a message across them something to the effect of "Incomplete Aircraft". Sure I know... they be free add ons and not worthy of immediate repair. But they represent what is and/or will be possible as AFS2 matures so hopefully they will eventually get some attention.
Please understand I am not freaking out or even angry... just concerned about the continued growth of this simulator. I have been flying home computer sims since 1980 and at this point I've quit using FSX and P3D and I'm putting all my hopes into AFS2 and FSW... and to a lesser extent XP11. I intend to use all 3 into the future.
I'm happy that you guys are continuing to develop and improve this sim but in my opinion this update needs some updating. 
Any way I'll quit bugging you and stand by for some fixes.
Thanks for listening to me and all the others who are having problems.
Best regards,
Tom Wunder