In the latest beta dev build the CAS Helicopter attack for OPFOR once activated the Mi-48 will fly over the area you point it to and circle around without attacking at all or very rarely using it's guns.
However the BLUFOR CAS Helo attack works perfectly fine.
Place a few BLUFOR units on the airfield, place necessary CAS Helo attack modules and synch them to your OPFOR soldier, call in the attack and watch.
Mass closing ancient tickets with no activity for > 12 months; assume fixed or too trivial.
If this issue is still relevant in current dev build, please re-post.