In Paris, France's BEA air accident investigation agency said data from the jet's cockpit voice recorder has been successfully downloaded. The BEA also said work resumed on the flight's data recorders.
The grounding of Boeing's 737 MAX jets after the crash in Ethiopia has had no immediate financial impact on airlines using the planes, but it will get painful for the industry the longer they do not fly, companies and analysts said on Friday.
American plane-maker Boeing has announced that it is weeks away from rolling out a software upgrade for its grounded 737 Max aircraft.
The Ethiopian carrier said DNA testing of the remains of the people on board flight 302 may take up to six months, and it offered bereaved families charred earth from the plane crash site to bury.
The black boxes from the Ethiopian craft, which was only a few months old and crashed minutes after takeoff, are being analyzed by the French authorities to determine the cause of the accident.
In the wake of the tragedy, which followed the similar deadly crash of Boeing 737 MAX in Indonesia in late October, aviation authorities and airlines around the world have either grounded their 737 MAX 8 series aircraft or closed their airspace to them.
49 dead in New Zealand mosque shootings
When asked why they weren't on any lists, Ardern said: "It's an indication they had not acted in a way that warranted it". Australian Prime Minister Scott Morrison on Friday confirmed the attacker at the Masjid al Noor mosque was an Australian.
Montreal-based Air Canada on Friday morning withdrew its outlook issued in February for the first quarter and full year of 2019 "in light of the current uncertainty" over the planes that carry as many as 12,000 of its customers a day.
The investigations into both 737 Max crashes are underway, and expected to focus on the automated controls.
Jamaica and the United States (US) are among a growing number of countries that have banned the 737 Max 8 and 9 from flying in their air space.
Trump and Ethiopian Prime Minister Abiy Ahmed exchanged condolences Friday, Abiy said on Twitter, with the USA president praising Ethiopian Airlines as a "strong institution" and offering technical support.
According to the flight data recorder, the pilots of Lion Air Flight 610 struggled to control the aircraft as the MCAS repeatedly pushed the nose down after takeoff.
In two anonymous reports on flights just after the Lion Air disaster, U.S. pilots disconnected the autopilot and corrected the plane's trajectory in response. Both planes crashed within minutes of take off after pilots reported problems.