[For the latest updates on the Ethiopian Airlines crash, click here.]

• The newest version of Boeing’s most popular jet is under intensified scrutiny after the deadly crash of Ethiopian Airlines Flight 302 on Sunday, leading that carrier and at least 17 others around the world to ground their 737 Max 8 planes. But at least 18 carriers, including American Airlines and Southwest Airlines, which are heavy users of the Max 8, continued to fly them on Monday.

• The Federal Aviation Administration in the United States, in a “continued airworthiness notification,” said that the investigation had just begun and that it did not have information to draw any conclusions or take any action — meaning the agency still considered the Max 8 safe to fly. But pilots and flight attendants in the United States raised questions about the Max 8’s safety.

• While investigators have not determined the cause of the crash, the flight data recorder and the cockpit voice recorder have both been recovered, Ethiopian Airlines said. Some circumstances of the crash were similar to one in October in Indonesia that killed 189 people.

• Aviation experts expressed surprise at the vast disparity in experience in the two-person cockpit crew. Ethiopian Airlines said the pilot of Flight 302 had 8,000 hours of flying time but the co-pilot had just 200.