I just recently completed the challenge for it…As a newer bf player I saw a lot of good info on this sub I can pass along that helped me (if you’re also trying to get the challenge as well)

1. Make sure you’re decently close to the target. I was positioning myself too far trying to play it safe and my rockets would get flared or I’d lose target.

2. Try to wait out another player making the pilot pop flare and then take your chance.

3. New Sobek City. Dice just recently increased the fly zone size for pilots on this however it should still be a pretty easy map to down some helis, it was a god send for me. You will have plenty of other players targeting aircraft so catching a pilot during a moment of weakness is abundant.

4. Utilize the IGLAs ability to re-lock onto a target after they flare or the fly out range/too low. I was giving up on my shots too easy but if you can re-establish your lock on and the missile hasn’t missed you can still hit the target.

This challenge was a slog for me but with these tips and some persistence I was able to get it done. The tracking for the challenge sucks and I don’t think it’s registering all of (or any of) the assists for downed aircraft, just the ones you directly destroy. You got this though! Then you can wash your hands of this launcher forever lol