Southwest Airlines Co, American Airlines and United Airlines operate 34, 24 and 14 MAX jets, respectively. The meetings are a sign that Boeing's planned software patch is nearing completion, though it will still need regulatory approval.

The equipment, which had been offered as an option, alerts pilots of faulty information from key sensors. It will now be included on every 737 Max as part of changes that Boeing is rushing to complete on the jets by early next week

Boeing is finalising its development of a previously-announced software update and pilot training revision that will address the MCAS flight control law's behaviour in response to erroneous sensor inputs.

\"It was the same case with the Indonesian (Lion Air) one. There were clear similarities between the two crashes so far,\" Ethiopian transport ministry spokesman Muse Yiheyis said.

In Addis Ababa, angry relatives of the 157 people who were killed Sunday stormed out of a meeting with airline officials, complaining that they were not getting enough information.

France's BEA air safety agency confirmed it has received the black box recorders from the plane, which was just four months old and crashed minutes after takeoff from Addis Ababa on Sunday.

Operations of airlines like SpiceJet and Jet Airways have been hit due to the government's decision to join a global grounding of 737-MAX aircraft following a crash in Ethiopia.