its in the gadget room on the shelf
in the Hq lab
ok first go to the gadget room (its in the HQ) then get the Ac100 the fan that ur looking for! so that 's it!
If you mean the prototype "ac1000" the fan is found in the gadget room. to find it, look for the testing chamber, than look at the shelf directly to the right of it.
go to the hQ and in the gadget room and there is a fan on one of the shelves
the fan 3000 in gary's shop inside the hq.
Go to the HQ and get the fan. Go to the beacon and use the fan to get it back then use the scissors in your spy phone to cut the balloon off.
its in the HQ where all the old HQ's are!
i
Audi's HQ is in Ingolstadt , Germany.
greece
In Asia.
uranus