I am waiting Biden administration to come, I hope he is different with Trump although @Nilgiri has said he may even get more hawkish toward Turkish.
I am just looking at the people he's picking for his administration too (since Biden is really not all there already).
None of them really have said much in opposition to Trump w.r.t CAATSA...and they definitely want it applied full 100% on NATO allies (they were clapping wildly behind scenes when Trump started bludgeoning germany a bit too on nord stream 2).
Generally you can't rely on words and DC blab above surface, you have to look at votes (in the legislature) and policy discussions/debates that the main power factions in US hold with each other (more quietly).
Its a deep state bipartisan goal now to make a certain example out of Turkey...Erdogan is another issue on top regarding it that US wants change on (i.e he change his approach on certain things, or Turks change leadership by the pressure/sanctions exerted in these coming years).
It is a pretty dumb move by US deep state I feel (there is 100 different ways to do these things better), but they have committed to it with Turkey now.
What I would say it is not necessarily due to CATSAA (and its relation to Russia) since India doesnt get the sanction, but it is more due to Tea party movement and its aligned with Jewish political power in USA who see Turkey as a possible future threat to Israel.
The basic gist of it is US wants Turkey to be a foil to Russia (as none of EU has that location that Turkey has)...and do as its told on that.
India's role is the south western axis/obstacle to China.
You will note the differences in populations too here in these scenarios and raw dimensions and potentials.
US deep state is not good at nuance (and thus this weight over-application on Turkey), but they have basic resolution at this difference in scale.
Tea Party movement is long dead my friend. Other movements have taken its place...and others down road. That stuff is messy long topic to get into.
There is a thing with jewish lobby doing its thing inside US power corridors, thats an established feature for sure. But they have their own hot/cold relationship with Turkey.....as you can see with Israeli supply of weapons to Azerbaijan for example (and the earlier relationship Israel had with Turkey, that Israel + jewish lobby would like to re-establish). In a way this power axis here probably crystalises and surmises the main issue lies with Erdogan and AKP...and they probably figure a better scenario for them comes their way if Turkey has different leader/govt.
So I feel economic issues and military sanctions etc are only going to rise here on out till they get what they want on political disposition inside Turkey.
As Turkish members have said here and other areas, its prudent for Turkey to develop its own technologies regardless...and bunker long term whats needed, what needs to be there long term past politics. But Turks need to figure out best way for that, thats a complicated long debate, its not easy.
So I suggest Liberal lead administration under Biden might has different policy over this sanction. Regardless of that, I think it is better for TFX to get European engine than USA since 4 or 8 years from now another Hawkish Republican candidate can show up again.
They aren't really "liberal"...that is just word they like to use. They are
neo-liberal and like neo-cons these are two sides of the same coin....and very different and muddied (due to DC swamp) from original liberal and conservative guise.
I agree Europe probably looks like an option for Turkey (regarding engines). But they don't share good relationship with France. What is left? Something with UK or Germany maybe....Italy does not have the core technology for it.
Ukraine is another promising option that Turkey should explore more if you ask me. Rest of RnD around world for such things are politically too far or have their own set of issues making it too difficult.