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Updated at 03:54 ET
Federal Aviation Administration says it temporarily bases all Boeing 737 Max aircraft operated by US airlines or US territories.
The message Wednesday afternoon follows the decision of many other countries to grind the plans after 157 people died in Sunday's crash of an Ethiopian Airlines 737 Max 8.
"The ground will remain in effect pending further investigation, including review of information from the aircraft's flight data player and cockpit voice recorder, "the FAA said in a statement. "The agency made the decision as a result of the data collection process and new evidence collected on site and analyzed today. This evidence, along with recently refined satellite data available to the FAA this morning, led to this decision."
The emergency order applies immediately. All Boeing 737 Max 8 and Max 9 planes that were in flight when the order was issued "may continue to and complete their soon-planned landing" – but they must not resume. The order continues to apply until the FAA revokes or changes it.
The FAA says it made the decision on the basis of new information it discovered when investigating wrecks from Ethiopian Airlines Flight 302. The agency says there are 74 Boeing 737 Max 8 and Max 9 aircraft registered in the US and 387 worldwide.
In a statement on Wednesday, Boeing said it "continues to have full confidence in the security of the 737 MAX".
"But after consulting the US Federal Aviation Administration (FAA), the US National Transportation Safety Board (NTSB), and aviation authorities and its customers around the world, Boeing has decided – with great care and to insure the flying public on the safety of the aircraft – to recommend the FAA to suspend the operation of the entire global fleet of 371,737 MAX aircraft. "
The FAA had said for several days that the aircraft are safe to fly. Major US airlines such as Southwest – using 34 of the Boeing 737 Max 8 aircraft – also expressed confidence in the plane.
Southwest appeared in a statement on Wednesday that it had been discouraged by the US decision-making plan and said the airline was "aware of media reports that the Boeing 737 MAX 8 fleet will be based in the US. confirmation and further guidance from the FAA and will respond according to the aviation safety interest. "
American Airlines said it had been informed earlier in the day that the entire Boeing 737 Max fleet would be grounded "with great care". The emergency order will affect 24 aircraft aircraft.
The FAA said Monday that it would require Boeing to improve how the 737 Max flight control system works, along with other design changes.
After Sunday's crash, Ethiopian Airlines founded its four remaining 737 Max 8 planes. Dozens of countries, including Germany and China, also founded their airlines 737 Max 8s. In some places, like India, Australia and the European Union, the aviation authorities have banned the entire 737 Max family from airspace.
Canada took action Wednesday, with transport minister Marc Garneau announcing restrictions such as "both domestic and foreign," from flying Boeing 737 Max 8 and 9 through Canadian airspace. Air Canada has received delivery of 23 of the 737 Max Plan, according to Boeing.
Despite previous US insurance policies, concerns have continued to be mounted. Peter Goelz, former CEO of the National Transportation Safety Board, told NPR:
"I have to say that yesterday was the first time I really started to worry about myself, because I have worked with the British investigators and regulators I have also worked with the German investigators, and I have the utmost account of them. These are not people who would make random judgments, so I am concerned that some of the finest legislative and investigative groups have now called for the founding
"I'm starting to worry over this aircraft. "
Describe how the FAA works, Goelz said the agency – who has sent out a team of investigators to the Ethiopia crash site – is" data-driven "and does not make anecdotal evidence decisions." They really have a close to working and regulatory relationship with Boeing. "
The US aviation system is mainly governed by cooperative and voluntary relations between gove companies and manufacturers. ade Goelz.
"There are not enough inspectors in the wage department to really have a" Gotcha! "monitoring," he said. "So they work very closely together. And it is a relationship that encourages the advent of mistakes, it is a relationship that has given us a very good system. But in times like this it is a relationship as a safe people questions. "
These questions include speculation as to whether Boeing's managers might have tried to influence the Trump administration in an attempt to squeeze the security issues around 737 Max 8 – the fastest Boeing CEO Dennis Muilenburg has spoken directly to Trump about the crash, according to Reuters. , stating that the two men have also spoken several times before – including negotiations on the price of the new Air Force One. The news agency also notes that working defense secretary Patrick Shanahan was a long-standing Boeing manager. And Nikki Haley, Trump's former UN ambassador, has been appointed Boeing's board.
The questions are months after US pilots criticized Boeing at the Lion Air disaster and said the aircraft had not provided enough information or training on a critical aspect of its new air traffic control system, as NPR's David Schaper reported in November. .
The pilot of Ethiopian Airlines Flight 302 reported having flight control problems with Boeing 737 Max 8 in the protocol before it crashed, said airline manager Tewolde GebreMariam, providing new details of the disaster that killed 157 people on Sunday.
Baz Ratner / Reuters
Pilot Yared Getachew, who had more than 8,000 flight hours of experience, "had difficulties with the flight control" and requested that he return to the airport of Addis Ababa, told GebreMariam for CNN and quoted recordings of plane communication and air traffic controllers.
Rental for immediate return was granted. But the planet didn't make it back, crashed just six minutes after launch and was worried about Boeing's new Max 8 passenger car – which was involved in another deadly crash under similar circumstances in Indonesia less than five months ago.
In both disasters, flight tracking data shows that the pilots struggled to keep their aircraft up and running – a problem that US regulators tried to address at the end of last year, sent an emergency directive for all Boeing 737 Max 8 and Max 9- plan and warning for an "unsafe condition" that can lead to "excessive nasal use, significant height loss and possible impact on the terrain".
Federal Aviation Administration ordered changes to aircraft manuals and routines in November – and Ethiopian air says it followed these guidelines.
"There was an AD [airworthiness directive] released by Boeing" th at circulated to airline pilots, GebreMariam, referring to the directive on acute airworthiness that came out shortly after the Lion Air crash in Indonesian in October 2018. "19659009]" It was also a briefing on AD, "says CEO. "So yes, the pilots were well informed about the Airworthiness Directive."
Several US pilots who reported having difficulty controlling the Boeing 737 Max plan early in their flights, used NASA's aviation security reporting system to flag problems they encountered.
"In two cases, pilots flying in the US at the end of last year unexpectedly took their aircraft down after departures. Both times, the crew took away the autopilot and was able to continue flying safely," said NPR's Russell Lewis reports. a pilot that the Boeing 737 MAX's flight manual was insufficient and "almost criminal insufficient". "
On Tuesday, the Allied Pilots Association, which represents American Airlines, issued 15,000 pilots, a statement saying the Union" is confident of Boeing 737 Max and in our members' ability to safely fly it. "
the group said its pilots" have the necessary training and experience to troubleshoot problems and take decisive action on the aircraft to protect our passengers and crew. "
While the Union authorized continued use of 737 Max, it added:" The flying public should also be aware that American Airlines Boeing 737 Max aircraft is unique. "
" "The two dozen 737 Max aircrafts in the American Airlines fleet are the only ones equipped with two AOA [Angle of Attack] screens, one for each pilot, providing an extra layer of awareness and warning," said the union.
These screens may be crucial to avoid a sudden downward slope, as Boeing and the FAA have recognized as a risk in the airworthiness bulletin issued shortly to the crash of Lion Air Flight 610.
The Airworthiness Directive said Boeing had found the automatic resistance system on its 737 Max 8 and Max 9 models can be triggered by a sensor that reports an incorrect high angle of attack – which means the system believes that the nose is too high and the plane stalls, even though it is not.
The problem presents "a potential for repeated nose-down commands ", the directive says and notes" This condition, if not addressed, can lead to flight crew member having difficulty controlling aircraft. lanet "and possibly resulting in a crash.
The study of the Ethiopian crash is still in its early stages and experts have warned to draw conclusions despite similarities between the two deadly disasters. The Ethiopian Airlines planet's digital flight data player and cockpit voice recorder were recovered Monday and GebreMariam said they will be sent abroad for analysis, probably either in the US or in a European country.