"We are doing everything we can to understand the cause of the accidents in partnership with the investigators, deploy safety enhancements and help ensure this does not happen again", said a Boeing Company representative.
This is the 737 Max's automatic anti-stalling system which is created to keep the plane from stalling.
Ethiopian Airlines CEO Tewolde GebreMariam said the doomed flight's captain was an experienced aviator with more than 8,000 flight hours. An airline industry official told The Associated Press that Boeing has indicated it is more likely to be two to four weeks.
The U.S. planemaker has been working on a software upgrade for an anti-stall system and pilot displays on its fastest-selling jetliner in the wake of the deadly Lion Air crash.
With heightened global scrutiny, the head of Indonesia's transport safety committee said a report into the Lion Air crash would be speeded up for release in July or August.
Boeing shares were hammered all week but got a small bump Friday after a report by the Agence France-Presse news agency that the company will produce an upgrade to the Max's flight-control software in 10 days.
However, Aimer said, after a certain point the Ethiopian Airlines plane's fate was sealed.
Legal experts said even non-US families of the Ethiopia victims may be able to sue Chicago-based Boeing in the United States - where payouts are larger - as eight of the dead were American and plaintiffs may argue liability hinges on system design and safety decisions made by executives.
"Whenever you change this stuff you better be damn sure you don't create some other problem", Diehl said.
The plane measures 252 feet from nose to tail. Meanwhile, the investigation into a cause is well underway. Others carriers say it's too early for them to say whether they will because they can not yet estimate lost revenue and extra costs.
Despite Boeing and US airlines insisting the planes were safe to fly, the FAA grounded the planes Wednesday. But airlines are scrambling to put passengers on other planes to prevent major disruption to air travel.
Experts say pilots typically ask to climb when experiencing problems near the ground in order to gain margin for maneuver and avoid any hard terrain.
It could be a lengthy grounding for the 34 Southwest and 24 American Max 8s at Dallas Love Field Airport. People of 35 nationalities were killed in the crash.
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.