As I recall, units would be available to 1st and Business class passengers/seats on long flights. You`re right as I recall, 110 planes and 60% long flights. Based on the limited data availble via Aeroflot, and only KNOWing they are using 767s and IL96 class planes which, on average, have 53 such seats per plane (i.e., 44 and 62, respectively), we can equate a SWAG as follows:

110 X .60 X 53 = 3498 units

Not a huge number, but if (quick swap-out) back-ups are employed, could be as many as 4,000. I doubt if they would require additional units for ``rotation`` (though the quick swap-out concept may suggest this as a possibility - adding 50% more units).

There ya go!

SGE