Data leads U.S. to ground Boeing jets

The U.S. and Canada, two of the last major holdouts, joined other countries in grounding all Boeing 737 Max 8 jets in the wake of a plane crash in Ethiopia. Their decisions came after new satellite-tracking data suggested similarities between the crash and another involving a Boeing 737 Max 8 in Indonesia in October.

Despite a personal appeal from the chief executive of Boeing, President Trump reversed an earlier decision by U.S. aviation regulators to keep the planes in service. Here’s a guide to all the developments in the aftermath of the crash on Sunday of Ethiopian Airlines Flight 302, which killed more than 150 people.

What went wrong: Though no cause has been determined yet, one of the Ethiopian Airlines pilots reported “flight-control problems” to air traffic controllers, requesting permission to turn back minutes before the crash.