You can buy the modern versions on Steam. They work perfectly with modern Windows and Mac systems.
If you are looking for the Aerofly experience in Oregon without the headache of outdated cracks, Ikarus has moved on to the series (RC 7, 8, 9, and 10). You can buy the modern versions on Steam
Cracked versions often crash because they cannot communicate with the original copy-protection drivers. You can buy the modern versions on Steam