All the data the twitter poster is referring came from the FOI request to the US government from a brave Chinese citizen. You can read the original reports here

All the data the twitter poster is referring came from the FOI request to the US government from a brave Chinese citizen. You can read the original reports here: https://commons.wikimedia.org/w/index.php?title=File:NTSB_DCA22WA102_Cockpit_Voice_and_Flight_Data_Recorder_Combined_Download_Report.pdf&page=25 https://commons.wikimedia.org/w/index.php?title=File:NTSB_DC...