I somehow debugged basic loadout, though I don't really understand what was the cause. I changed ordnance carried from Bomb_Cluster to DC_Cluster and suddenly crew and bombs were visible, and plane started to drop DC's.
So, I thought Bomb_Cluster is bugged and to test it, changed back to Bomb_Cluster... to my surprise it still works.
I suspect now the problem lied with txt file, I had situations before with ships where adding one more empty line (aka hitting enter) at end of file magically debugged it. Must have been something of that sort