The deregulation process is the issue, which was a major effort of Bush'43.

“The roots of this crisis can be found in a major change that the FAA instituted in its regulatory responsibility in 2005. Rather than naming and supervising its own ‘designated airworthiness representatives,’ the agency decided to allow Boeing and other manufacturers who qualified under the revised procedures to select their own employees to certify the safety of their aircraft. In justifying this change, the agency said at the time that it would save the aviation industry about $25 billion from 2006 to 2015. Therefore, the manufacturer is providing safety oversight of itself. This is a worrying move toward industry self-certification.” -- https://www.dcreport.org/2019/03/18/how-deregulation-made-fl...

Obama should be faulted for oversight perhaps, but the ball was rolling long before.

Trump _has_ made broad efforts to force _further_ FAA dereg. -- https://www.forbes.com/sites/marisagarcia/2019/03/18/did-tru...

So, you think things have improved since then?