The latest Boeing 737 model is equipped with a manoeuvring characteristics augmentation system (MCAS), which is responsible for pushing the aircraft’s nose down when it senses a high angle of attack that may lead to an aircraft stall. Aviation safety regulator DGCA on Thursday allowed operations of Boeing 737 MAX planes, which were banned almost two-and-a-half years ago following two deadly crashes of this model that together killed 330 people. With India opening up the skies for the 737 MAX planes, China remains the only major aviation market to still have a ban in place.