Boeing dismissed fears of a second 737 Max crash when confronted by pilots after the plane's first disaster, leaked audio reportedly reveals

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Boeing played down concerns about a second crash involving its 737 Max plane when pilots confronted it after the first fatal crash, and said that giving them additional information about the aircraft's software was "unnecessary," according to audio obtained by CBS News and The New York Times.

American Airlines' pilots union challenged Boeing after a Lion Air Boeing 737 Max crashed in October 2018, killing all 189 people on board. Pilots said that they wanted more information about the plane they were flying and said that Boeing needed to take more steps to ensure its safety, according to the audio.

Boeing Vice President Mike Sinnett responded saying that it was not clear that the plane was the cause of the crash, and said that Boeing did not want to "overload the crews with information that's unnecessary," CBS News reported.

The Lion Air crash was the first deadly crash involving the plane, and was followed by an Ethiopian Airlines Boeing 737 Max crashing and killing all 157 people on board in March 2019.

The 737 Max was then grounded around the world and the preliminary reports into the crashes, released after the American Airlines meeting, said that the plane's MCAS anti-stall software misfired in both crashes.

Pilots in the meeting demanded more information about the software system, and said that they had not been aware that it was on the plane and that it was not included in their training manuals, The New York Times reported.

According to the New York Times, Michael Michaelis, an American Airlines pilot and the head of safety in the union, said: "These guys didn't even know the damn system was on the airplane, nor did anybody else."

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People walk past a part of the wreckage at the scene of the Ethiopian Airlines Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
Ethiopian plane crash today LIVE Updates: The Ethiopian prime minister's official Twitter also expressed condolences to families of those lost in the crash.
A Chinese group look at the arrival flight schedule as informing about their colleagues who were allegedly onboard the plane that crashed in Ethiopia, at the Jomo Kenyatta International Airport in Nairobi, Kenya, on March 10, 2019. - An Ethiopian Airlines Boeing 737 crashed on March 10 morning en route from Addis Ababa to Nairobi with 149 passengers and eight crew believed to be on board, Ethiopian Airlines said. (Photo by Yasuyoshi CHIBA / AFP) (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)
A Chinese group send messages as informing about their colleagues who were allegedly onboard the plane that crashed in Ethiopia, at the Jomo Kenyatta International Airport in Nairobi, Kenya, on March 10, 2019. - An Ethiopian Airlines Boeing 737 crashed on March 10 morning en route from Addis Ababa to Nairobi with 149 passengers and eight crew believed to be on board, Ethiopian Airlines said. (Photo by Yasuyoshi CHIBA / AFP) (Photo credit should read YASUYOSHI CHIBA/AFP/Getty Images)
Family members of the victims involved in a plane crash react at Addis Ababa international airport Sunday, March 10, 2019. An Ethiopian Airlines flight crashed shortly after takeoff from Ethiopia's capital on Sunday morning, killing all 157 people thought to be on board, the airline and state broadcaster said, as anxious families rushed to airports in Addis Ababa and the destination, Nairobi. (AP Photo/Mulugeta Ayene)
Family members arrive at Bole International airport in Addis Ababa, Ethiopia, Sunday, March 10, 2019, to check on information on the Ethiopian flight that crashed. An Ethiopian Airlines flight crashed shortly after takeoff from Ethiopia’s capital on Sunday morning, killing all 157 people thought to be on board, the airline and state broadcaster said. (AP Photo/Elias Masseret)
An Ethiopian Airports Enterprise fire engine drives to the scene of the Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
An Ethiopian Airports Enterprise fire engine drives to the scene of the Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
An Ethiopian Airports Enterprise fire engine drives to the scene of the Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
A general view shows the scene of the Ethiopian Airlines Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
A passenger safety instruction card is seen at the scene of the Ethiopian Airlines Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
People walk at the scene of the Ethiopian Airlines Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
A general view shows the scene of the Ethiopian Airlines Flight ET 302 plane crash, near the town of Bishoftu, southeast of Addis Ababa, Ethiopia March 10, 2019. REUTERS/Tiksa Negeri
Relatives of the victims involved in a plane crash wait for information Jomo Kenyatta International Airport, Nairobi, Kenya, Sunday, March 10, 2019. An Ethiopian Airlines flight crashed shortly after takeoff from Ethiopia's capital on Sunday morning, killing all 157 people thought to be on board, the airline and state broadcaster said, as anxious families rushed to airports in Addis Ababa and the destination, Nairobi. (AP Photo/Khalil Senosi)
Passengers wait outside the Bole International airport Addis Ababa, Ethiopia, Sunday, March 10, 2019. An Ethiopian Airlines flight crashed shortly after takeoff from Ethiopia's capital on Sunday morning, killing all 157 people thought to be on board, the airline and state broadcaster said, as anxious families rushed to airports in Addis Ababa and the destination, Nairobi. (AP Photo/Mulugeta Ayene)
Family members arrive at Bole International airport in Addis Ababa, Ethiopia, Sunday, March 10, 2019, to check on information on the Ethiopian flight that crashed. An Ethiopian Airlines flight crashed shortly after takeoff from Ethiopia’s capital on Sunday morning, killing all 157 people thought to be on board, the airline and state broadcaster said. (AP Photo/Elias Masseret)
In this photo taken from the Ethiopian Airlines Facebook page, the CEO of Ethiopian Airlines, Tewolde Gebremariam, looks at the wreckage of the plane that crashed shortly after takeoff from Addis Ababa, Ethiopia, Sunday March 10, 2019. An Ethiopian Airlines flight crashed shortly after takeoff from Ethiopia's capital on Sunday morning, killing all 157 people thought to be on board, the airline and state broadcaster said, as anxious families rushed to airports in Addis Ababa and the destination, Nairobi. (Facebook via AP)
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Todd Wissing, also an American Airlines pilot, reportedly said that the system should have been explained in the training manual: "I would think that there would be a priority of putting explanations of things that could kill you."

Another pilot said "We flat out deserve to know what is on our airplanes," according to CBS News.

Sinnett said that Boeing felt pilots did not need to know more about the system, given how unlikely it was to misfire.

"I don't know that understanding this system would've changed the outcome on this. In a million miles, you're going to maybe fly this airplane, maybe once you're going to see this, ever. So we try not to overload the crews with information that's unnecessary so they actually know the information we believe is important," he said, according to the recording obtained by CBS.

But he also said that he did not "disagree" that pilots deserved to know what was on the plane.

CBS News reported that Sinnett did not appear to know that he was being recorded.

In April, after the second crash, Boeing CEO Denis Muilenburg defended not telling pilots about the system, saying that it was "embedded" into the way pilots handle the plane, and so "when you train on the airplane, you are being trained on MCAS."

"It's not a separate system to be trained on," he said.

Boeing declined to comment to The New York Times specifically on the November meeting, but provided a statement saying: "We are focused on working with pilots, airlines and global regulators to certify the updates on the Max and provide additional training and education to safely return the planes to flight."

The company is currently working on a software fix that, when approved by the FAA and regulators around the world, will likely see the plane return to service.

But Michaelis urged Boeing to take action to fix the plane at the November meeting. He said that Boeing should get the Federal Aviation Administration to instruct Boeing and airlines to update the software, which would have likely resulted in the plane being grounded temporarily, The New York Times reported.

Sinnett said Boeing "don't want to rush and do a crappy job of fixing the right things and we also don't want to fix the wrong things" and said that Boeing was examining the plane to see if there were any problems with its design.

"For flight-critical software, I don't think you want us to rush, rush it faster," he said.

Sinnett also said that "the assumption is that the flight crews have been trained"

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