Boeing announced on Tuesday that it received far fewer orders for its 737 jets in the first quarter of 2019 than it recorded in the same period last year.

There were 32 new orders for the jet in the first three months of this year, compared with 122 a year earlier, the company said. The 737 Max, which is Boeing’s best-selling plane, has been grounded since last month, when it was involved in a deadly crash for the second time in five months.

In October, Lion Air Flight 610 plunged into the Java Sea shortly after takeoff, killing all 189 people onboard. In March, Ethiopian Airlines Flight 302 crashed into the ground a few minutes after departing Addis Ababa, resulting in the deaths of all 157 people on board.

The 737 Max remains grounded by regulators around the world as Boeing works on a software fix for a flight control system that is suspected of contributing to both crashes. Some airlines have even announced that they would cancel their 737 Max orders over concerns about the plane’s safety.