Last month, Warren Buffett disclosed a $5.5 billion investment in four airlines: American, Delta, United and Southwest. Three show share price declines this year.
Boeing's plant in Charleston, S.C., just had the most dramatic week in its history.
President Trump has been a Boeing critic, but Friday he will be Boeing's guest at the launch of company's newest aircraft, the 787-10.
American Airlines CEO Doug Parker has sought to work with labor, but two unions have expressed their lack of confidence in his efforts.