Works for me. Mini 4, Air 2, Pro 9.7, Mini 2, iPhone 6+, they all worked or currently work for me, don't have the Air 2 and Mini 2 anymore but they worked.
I've switched my Air2 back and forth between my P3's and P4 and never had an issue. I also own a iPhone 6+ and iPad mini4, I can mix and match any combination with no problems.
Phantom 4 with iPad Air 2 running IOS 9.3.1 works just fine for me.
If your iPad Air 2 is not behaving properly, as discussed in several other threads, it needs to be plugged into iTunes and reset, which will correct the problem.
I've used my air 2 for my P3P and my P4. No issues. I now use an IPad Pro 12.9" and have no issues with my P4 and I've used on my buddies P3P with no issues going back and forth between birds.
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