"Following the banning of the 737 MAX from the airspace of many countries, including America, which is the country that builds it, this type of plane is now banned from Iranian airspace", Jafarzadeh said.
Air Canada announced on Friday that it would suspend its financial guidance for the first quarter and full year of 2019 due to uncertainty caused by the suspension of Max 8 flights and Boeing's recent decision to pause deliveries to airline customers.
It could be a lengthy grounding for the 34 Southwest and 24 American Max 8s at Dallas Love Field Airport.
"The pilot reported flight control problems", said CEO Tewolde GebreMariam.
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.More news: Downstream Missouri River prepares for flooding
Kent Krause is an attorney who specializes in aviation issues.
The aircraft's ground speed after departure was unusually high, the Reuters source said, reaching around 400 knots (460 miles per hour) rather than the 200 to 250 knots that is more typical minutes after departure.
The company revealed that it began working on the upgrade after another 737 Max jet operated by Lion Air crashed last October, killing all 189 passengers and crew members that were onboard.
The software Boeing plans to implement includes updates to the Maneuvering Characteristics Augmentation System. It's something evidence in the Ethiopian crash also points to. "It may end up in such a severe fashion that okay the next time he sort of let's go or think he's got it under control".
The grounding of planes has left USA and Canadian carriers wrestling with customer calls and flight cancellations. It pointed to possible similarities to the Lion Air crash.More news: Mass Shootings at New Zealand Mosques Kill 49; One Man Charged
Several American pilots also reported issues with the MCAS and the FAA said it had ordered Boeing to issue a fix by April.
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.
Boeing has declined to say whether the Ethiopian Airlines crash gave new urgency to finish the work, but experts have said that is a safe bet.
Boeing and USA air safety regulators have been at odds over how much pilot training will be required along with the software fix, the Wall Street Journal reported on Friday.
"Whenever you change this stuff you better be damn sure you don't create some other problem", Diehl said. We hear from two aviation experts on the future of aviation safety and whether a lack of pilot training may have played a role.More news: Suspect arrested in murder of reputed mob boss