Garuda Indonesia, which on Friday said it planned to cancel its order for 49 737 MAX jets citing a loss of passenger trust after the crashes, will skip a briefing organized by Boeing to prepare for the return of the 737 MAX to commercial service.
In a statement Sunday, Boeing called the meeting a "productive session" and said that they had invited more than 200 pilots and technicians, as well as regulators, to an informational session at the company's production facility in Renton, Washington, on Wednesday.
"In spite of the tragedy, Boeing and Ethiopian Airlines will continue to be linked well into the future, " he said.
US airplane manufacturer Boeing says it plans to hold a briefing Wednesday for 200 pilots, technical leaders and regulators as it works toward returning its 737 MAX planes to service following two deadly crashes.
This is because of the grounding of the Boeing 737 Max.
Boeing told Reuters news agency that Wednesday's event was one of a series of in-person information sessions.
"At the same time, we continue to work closely with our customers and regulators on software and training updates for the 737 MAX".
Separately, Boeing's European rival Airbus announced a deal to sell 300 planes to Chinese airlines, which are also major operators of the Max. He declined to provide further comment.
Britain's aviation regulator, the Civil Aviation Authority, told HuffPost it was not attending this week's Boeing meeting.
The changes are meant to decrease the chances of triggering the Maneuvering Characteristics Augmentation System, or MCAS, which is believed to have played a role in the Lion Air crash in October. South Korean low-priced carrier Eastar Jet will send two pilots, a spokesman said.
Von Rumohr estimated that Boeing's compensation to the families of Ethiopian Airlines victims could be $150 million - around $1 million for each of the people who died - and less after insurance.
The 737 MAX is Boeing's best-selling plane, with orders worth more than $500 billion at list prices.
On Saturday, teams from the three USA airlines that own 737 MAX jets joined a session in Renton reviewing a planned software upgrade.
A United States official briefed on the matter on Saturday said the Federal Aviation Administration (FAA) had not yet signed off on the software upgrade and training but aimed to review and approve them by April.
The US aviation giant has been racing to fix a software problem suspected to be the cause of the two crashes that killed 157 people in the Ethiopian Airlines accident this month and 189 people in an Indonesian carrier Lion Air crash five months ago.