I suppose but that accuracy isn't worth it. Haxorus doesn't need coverage against ice types like other dragons do since it's only single typed. Most ice types are frail too so outrage would be able to take them out anyway. And, what do you mean by flying types? Steel does neutral damage to them.
That seems like a waste of an item slot to me. Giving it an expert belt would boost it's coverage moves. Life orb would be even better if you have one.