US Pilots Logged Complaints Over Boeing's 737 MAX 8 The reports come after two fatal crashes over <br />the past six months involving the aircraft. The tragedies in Ethiopia <br />and Indonesia left <br />over 350 people dead. More than 40 countries <br />have now stopped flying <br />Boeing's MAX 8. Southwest and American Airlines were the only ones in the U.S. <br />that used them. In one complaint to the FAA, a pilot said the plane descended rapidly on <br />its own after takeoff. The pilot goes on to say that the anomaly occurred when <br />autopilot mode was turned on. Unnamed U.S. pilot. via FAA According to CNN, the same thing may have happened in Lion Air's crash last October.