There are 3 more or less comprehensive sources I know of: scramble, warfare.ru and Moscow Defense Brief. So I'll list the numbers given by all 3. There will definetly be some discrepancies, and the MDB numbers are the most up to date ones (they're from the February issue, of this year).Feanor,
can I ask a favour? Would it be possible for you to give me a similar breakdown of other major types in the VVS, & their approximate numbers?
MiG-29: MDB lists 5 regiments, out of which 2 are in the special purpose command, 2 are in the 4th Air Army and 1 in the 14th Air Army.
Scramble lists 6 regiments, 7 regiments that include the MiG-29 (though the problem is that some of them listed the Su-27 and MiG-29, confusion may stem from someone not being able to recognize the difference and listing both to indicate that) and some MiG-29's in the demo unit that includes aerobatics teams like Russian Knights etc. Also scramble lists all MiG-29 flying units. MDB listed only VVS units. I don't know if all PVO units have been transfered to VVS command yet or not. That may account for some of the discrepancy. Another part may be that the Naval Aviation uses some, which would also not be listed.
Warfare.ru Lists 5 active combat regiments, 2 training regiments, an independent squadron in Armenia, and some stored at storage bases as well as flight test centers. It also mentions ~110 used by the Naval Aviation.
We can safely assume that the VVS flies around 5 regiments, which (at 2 squadrons each) would give us 120 combat airframes.
MiG-31
MDB lists 5 regiments, 1 in the Special purpose command, and 1 in each of the 5th 6th 11th and 14th Air Armies.
Scramble lists 4 regiments of MiG-31 and 8 regiments that include the MiG-31. However the information is dated, and the mixed regiments are all either mixed with MiG-25U or Su-24 aircraft, which makes me suspect that they're recon or disbanded units (it makes no sense to fly the Foxbat, when mothballed Foxhounds are at Nizhniy Tagil due to lack of funds for units).
Warafare.ru lists 6 fighter regiments, an independent regiment, and some located a flight test center. It claims that one of the regiments is in the Naval Aviation. This is suspect, as it makes little sense, but not impossible.
The estimates vary rather wildly. Also MDB does not list the MiG-25MR (recon variant) which is supposedly still flying, only 5 regiments of the Su-24MR. Nor do they have any mention of the MiG-25U which scramble lists as mixed with the MiG-31 regiments. I would not think that more then 6 regiments are likely to be active, but it's hard to get any definite information.
And it's getting very late, this post is getting very long, and scrolling through scramble's list is getting very annoying. So I'm going to have to say good night for today, as I do have work tomorrow. However I'll get back to you on the other aircraft tomorrow. I am looking forward to doing some research on the Su-25 modernization program.