https://phys.org/news/2019-03-canada-grounds-boeing-max-8s.html > Garneau emphasized that the data is not conclusive but crossed a threshold that prompted Canada to bar the Max 8. He said the new information indicated that the Ethiopian Airliner jet's automatic system kicked in to force the nose of the aircraft down after computer software determined it was too high. He said that in the case of the Lion Air crash off Indonesia, the pilot fought against computer software that wanted to drop the nose of the plane. > "So if we look at the profile, there are vertical fluctuations, in the vertical profile of the aircraft and there were similarities in what we saw," Garneau said. "But I would repeat once again. This is not the proof that is the same root problem. It could be something else."