The union representing American Airlines' 15,000 pilots is suing the company in an effort to stop flights to and from China. In a lawsuit filed in Texas, the Allied Pilots Association is seeking a temporary restraining order to immediately stop US-China service, citing "serious, and in many ways still unknown, health threats posed by the coronavirus." American Airlines operates about 56 monthly flights between Dallas/Fort Worth International and China, according to the union. "We estimate that as many as 300 passengers and crew travel to DFW alone from Chinese cities on each American Airlines flight,” said Eric Ferguson, the union's president. “To us, that level of risk is unacceptable." American Airlines has previously said it will cancel flights between Los Angeles and China from Feb 9 to March 27, noting a "significant decline in demand." <br/>