Since taking office I have been very strict on Commercial Aviation. Good news - it was just reported that there were Zero deaths in 2017, the best and safest year on record!— Donald J. Trump (@realDonaldTrump) January 2, 2018
It may seem like I'm posting a lot of Trump's offensive or just plain idiotic tweets, but I'm not. I let 20 to 30 go for every one I post.
For this gem, the first thing I noticed was that 58,000 people liked this tweet. F.F.S. Donald Trump hasn't revolutionized airline safety. Since 2009, there has only been one U.S. commercial airline fatality, and that was a cargo plane. That happened in May 2017, while Trump was president.
US airlines are extremely safe because crashes are bad for business and probably because the FAA has very strict safety rules and great forensic analysis after crashes. Donald Trump has nothing to do with this. The remarkable safety record of he U.S. airline industry simply continued in 2017.
BTW, claiming that he has something to do with this safety record because he's been strict is laying claim to the benefits of government regulation, which is an anathema to conservatives. In the world of free market ideologues, the marketplace is supposed to take care of safety. In fact, Trump has spoken about privatizing air traffic control, which has been a libertarian dream for decades.
One theoretical question I have about this tweet is whether Trump believes that he really has something to do with the lack of crashes this past year. Given his personality, that's possible. He would not need any evidence to believe it. It's good, so he feels the credit is his. It's also possible that he knows he has nothing to do with it, but he'll take credit anyway. If I were placing a bet, I'd bet on the former. I'm pretty sure that Trump goes from a thought to a conviction in an instant if the thought somehow reflects well on him.