The 'black boxes' from the crash arrived for analysis in France Wednesday night but meetings with investigators didn't begin until Thursday.
The plane is the latest generation of the Boeing 737. American Airlines and Southwest Airlines are among the major U.S. carriers that use it.
After Trump's former personal attorney Michael Cohen pleaded guilty to illegal campaign contributions, the president said Cohen’s actions are not campaign violations.
Katie Arrington and an aide were seriously injured in the crash Friday night. The driver of the other vehicle was killed, the sheriff's office said.