In the company of Skagway and some other campaigns Ka 29 armed only with ATAKA,he has no rockets!This makes the helicopter very weak! In the menu there is no possibility this is not corrected! Where can I fix it? Google translation

I think it's not helicopter issue. such payload is default for some task types, but you can't change it in payload screen because you not in keysite area (even if it looks like). land in different parts of keysite (closer to it's center) to find where you can change weapons and refuel.