I did with the Hind and at the end I followed the coastline until I reached the camp that was seized by NATO (yourself) in the previous mission (the one where you have to attack and hold a base). I landed there and the cutscene started right away.
I think it's best you run quickly to the building on the left with the ammo crates, you get a PK, clear the area of hostile forces, jump into the Hind before the BMP gets you and then destroy everything you come across. Then you do what I just told you. It takes a few tries, but it's worth it.