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The one in Texas?
I dislike Turkey as much as everyone else but to be honest its kinda weird to have a ban on arms sales to a country you are supposed to be in a military alliance with. 
But i know other NATO countries have a ban on sales of weapons to Turkey and i dont know the backstory, so for all i know it could make sense. >

Turkey is the only NATO country with the S-400, which is a Russian anti-aircraft / anti-missile defense system. The response was to not sell Turkey advanced jets like the F-35 because the fear was the S-400 could be used to determine the F-35s' weaknesses and flaws - whether done overtly by Turkey, or covertly by Russia.
It should be noted there are a few other NATO countries that have the S-300 system (developed in the mid/late 2000s) which is still dangerous, but no longer cutting edge or as much as a threat to the more advanced fighters. >

IIRC it was a networking issue. The US did not want an f35 to be on the same network as a s400 setup. >

CBA to change that WiFi password 🤷 >

Don't be silly. The F35 runs on Bluetooth >

That's why the recent f35 crash happened, lost its connection to remote controller