Do pardon me on my lack of knowledge, I just joined this forum last year.
That's fine, I was just wondering what your understanding was.
So to confirm -- yes, J-11Bs have been out of production for years. The only land based Flanker variant in active production in the last half decade or more, is the J-16.
WRT these two points - Around when in the future do you guys envision that the J-20Ss (i.e. dual-seat variant of the J-20) would kick the J-16 out of the production line, like how the J-20 has essentially kicked the J-11 out of production several years ago?
Since with a twin-seater design, the J-20S could also fullfill the same role as the J-16 is fullfilling now (and can be fullfilled with a larger body and more onboard power) when it comes to roles e.g. enhancing greater networking between squadrons and regions in a battlefield, C&C wingman UAVs and UCAVs, smaller but agile AWACS, and electronic warfare.
Plus with the upcoming J-35/J-31, which I do believe that a twin-seater variant would be available as well to replace the J-15S and J-15D.
The twin seat J-20AS will do a different role to the J-16, even though both are twin seaters. One is 5th gen and one is 4.5th gen.
Also keep in mind that production of all J-20 airframes will also have a limit to how many can be produced per year, and that will be divided between single seat and twin seat variants.
Or putting it another way, I do not expect there to be any sort of direct relationship between J-20AS production and J-16 production. It's not like increased production of one will lead to reduced production of the other.
When J-16 production begins to slow down and stop, it will be because the PLA as a whole will be putting the brakes procurement of 4.5th gen aircraft and transitioning to a more 5th gen aircraft procurement stage.
I also wouldn't say that J-20 directly kicked out J-11B production.
It's more that J-16 kicked out J-11B production.
J-20 created a whole new category for itself that nothing else (so far) could touch.