I have designed scenario's (for testing mostly) where I added air-to-air missiles onto helo's such as sidewinders and they shot down attacking fixed wing aircraft. Did the same and got fixed wing to launch sidewinders at helo's on their way across the board also.
It seems like eons ago and I don't remember if it was the DOS version or WinSPMBT. Maybe I need to test this again and document it.
Since only one airplane is on the map at any given time for their attack run you cannot simulate air to air stuff this way between fixed wing aircraft.