"Airworthiness Directives (ADs) are legally enforceable regulations issued by the FAA in accordance with 14 CFR part 39 to correct an unsafe condition in a product." - FAA.gov
Could range from inspect something every X flight cycles (for metal fatigue), revising the flight manual, etc. Anything that affects the aircraft's ability to stay in the air in any way.
It could've been any number of cases, including Whole Women's Health but they didn't need a ninth vote on that one as it went 5-3 in favor of the abortionists. He was the deciding vote in mandatory union dues case out of California, which split 4-4. He would have voted to overturn Abood v. City of Detroit, longstanding precedent allowing mandatory union dues. Then there's Texas v. United States where the Fifth Circuit dumped DAPA. Court split 4-4 on that as well.
No one enjoys having their entire world view toppled like a toddler going batshit on a Lego skyscraper. My generation (millennial, I'm ashamed) especially. They HATE facts. They want to be told certain things to make their beliefs fit in a nice, little box.
I've actually had a cop (state variety) with a portable stingray pull me over because he thought I was fucking with my phone while I was driving. I was, legally, through my hands free system in my car. Pulled me over, asked me if I knew why he pulled me over, I said no, told me I was driving "erratically" and that he "believed" that I was using my cell phone. It devolved into a shitshow with him walking away with nothing. They've been known to actually text drivers to tell them to get off their phones.
The purpose of college is to learn how to think. To learn how to learn through critical thinking, logic, reasoning, all of that. That's long gone. Now they teach kids to simply vomit out facts and figures. I can't count how many of my classmates, even in graduate school, would memorize shit. They were incapable of actually learning. That begins in pre-K and kindergarten and continues through college. That and the liberal indoctrination. Deprive kids of the education required to develop critical thinking, logic and reasoning ("reading, writing, arithmetic") then teach kids one point of view, ram it down their throats. Tell kids they're always right, award for failure, it isn't just the colleges but the entire fucking public education system. It's designed for this.
Turning Bernie supporters seems to be the most successful. Die-hard Hillary supporters will cover their eyes and ears. Bernie supporters know that he was fucked by the Democrats. They want to get even. And I believe…I don't know what percentage but a large one has the country's best interest at heart. They, too, are fed up with the corruption. I've tried telling Hillary supporters, they think all of her fuckery is just fake news. ALL OF IT. They're fully brainwashed. I see many as a totally lost cause.