Thucydides wrote:Nudging 15% is not the majority of missions. The strict definition for majority would be 51% of all missions, but you would need to fly more than 100% more missions with A-10's to even get to 30% of all missions.
So by your own numbers, A-10's only fly a small percentage of missions against ISIS.
Once again, perhaps it would be more useful to consider why the US and Allied airforces are only flying 10-15% of all missions with the A-10 and the remaining 85-90% of missions via high altitude precision bombing. The conditions that created the A-10 at the end of the 1970's no longer exist, and there are many different ways to achieve the same effect on the ground.
Not to put to fine a point here, but how you can claim anything from attacking ISIS, extrapolated to the real world or modern war is beyond belief.
I thought the situation was summed up quite nicely: 4:1 ratio of aircraft in inventory F-16 vrs A-10. F-16s already on station in the area. A-10's are not. Moving aircraft is expensive. Logistics train bites big time. The few A-10's that are on station have not only arrived, set up their bases but also racked up 11% of manned missions by January in only 2 months. I will bet you that the number of F16's present far outnumber the A10's on station.
As Relax said, it is because of $$$. Has no bearing on modern tactics as ISIS has no air defense. $$$ per flight hour.
Math time:
0) Majority by definition: when more than 2 of something are present will fall to the singular with more percentage than the others.
1) Assume same number of manned missions over 6 months. Bad assumption, but hey, beggars cannot be choosers.
2) 11% in 6 months when on station ~2 = 33% manned missions over 2 months.
http://www.defensenews.com/story/defense/2015/01/19/a10-strikes-isis-11-percent/21875911/USA airforce sorties
41% F16
37% F15
11% A-10
11% etc.
Navy has its own(F18)
Foreign has its own
So, by definition, if in last 2 months the A-10s have 33% of sorties, then F16,F15, etc assuming number of sorties remains constant will have fewer than A10.
All about the $$$. Same reason drones are loved so much. Are they less capable? Sure, but they are a fraction of the price per hour.
Now why we are attacking ISIS is rather a head scratcher to me. Would be cheaper to just dump weapons to the Pershmerga(Kurds) and wash our hands.