“At this time there are no facts on the cause of the accident other than news reports. … We have full confidence in the aircraft and our crew members, who are the best and most experienced in the industry,” American Airlines said in a statement. The Boeing 737 is the world’s best-selling commercial aircraft. The 737 Max is the latest version in the 737 aircraft family, which accounts for almost one-third of the company’s operating profit, according to Bloomberg. The Ethiopian Airlines crash that claimed the lives of everyone on board, including 22 United Nations staffers, was the second crash of a 737 Max 8 in recent months. There are currently 65 of the aircraft in the U.S. with orders for 548 more from major airlines. Boeing issued a statement Monday saying that an investigation into what caused the crash of Ethiopian Airlines flight 302 “is in its early stages, but at this point, based on the information available, we do not have any basis to issue new guidance to operators.” China, Indonesia and Ethiopian Airlines have grounded the jets, and the Federal Aviation Administration said it was “closely monitoring developments.” The groundings are significant considering that China is the most important market for Boeing’s latest planes. Travelers who don’t feel comfortable flying on a 737 Max can check the details of their booking, which will typically show the type of aircraft, or they can visit flightstats.com.