The union representing American Airlines flight attendants issued a bulletin Monday telling members they will not be forced to work on Boeing 737 MAX airplanes after the crash of an Ethiopian Airlines 737 MAX 8 Sunday, the second of that model to go down in less than six months. “It is important for you to know that if you feel it is unsafe to work the 737 Max, you will not be forced to fly it,” wrote Lori Bassani, national president of the Association of Professional Flight Attendants, which represents more than 27,000 American Airlines flight attendants. Bassani said she has been in contact with top leaders at the airline to request they address “critical safety concerns of our union and our members in flying the 737 Max aircraft.” Unions representing pilots raised concerns last fall after a 737 Max 8 operated by Lion Air crashed in the Java Sea off Indonesia shortly after takeoff. <br/>