Boeing 737 Max8 Crashes

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fountainhall
Posts: 2037
Joined: Fri Jan 27, 2017 11:45 am
Location: Bangkok

Re: Boeing 737 Max8 Crashes

Post by fountainhall » Fri May 17, 2019 6:47 pm

Good news!

But I see it has flown only 360 hours with the new software fix. I wonder what the total hours in the air were before the first of the two fatal crashes and in the 21 months it had been in service before all 371 aircraft were grounded? Since it is a short to medium haul aircraft, each one delivered is likely to have had at least 10 hours in the air each day, if not more in some cases. Given that all those were delivered over 21 months at a rate of something like a minimum average of 18 deliveries a month, total hours in the air for all aircraft must have been well in excess of 1 million. So once it has flown 1 million miles with the fix, I will consider it safe. But I will still not fly in it for at least 3 years, same routine I followed after the Dreamlliners' batteries self-combusted.

Unfortunately for Boeing, getting FAA approval is likely to take far longer this time than in the past. And there is a lot of discussion that overseas regulators may not automatically follow the FAA as they have with earlier models. Facing lawsuits from the deceased passengers and crew, order cancellations, compensation law suits for cancelled orders and the grounding of the aircraft, Boeing's troubles are far from over. And then it is being sued by a consortium of shareholders who claim the company concealed problems with the 737 Max and “effectively put profitability and growth ahead of airplane safety and honesty.” Last but far from least is the public perception of an aircraft with two total crashes in less than a handful of months . . .

This link is to a very long and very detailed article on the entire 737 Max issue from before design to the present day.

https://www.bbc.co.uk/news/resources/id ... ly_crashes

fountainhall
Posts: 2037
Joined: Fri Jan 27, 2017 11:45 am
Location: Bangkok

Re: Boeing 737 Max8 Crashes

Post by fountainhall » Sun May 19, 2019 12:18 pm

It just gets even worse for Boeing with yet another fault relating to the 737 Max finally revealed.
Boeing has been forced to correct a flaw in the software of flight training simulators that are meant to reproduce the flying conditions of the 737 Max aircraft involved in two deadly crashes in the past six months.

The disclosure of a problem with the simulator software is a further blow to the credibility of the Boeing brand, which has been seriously damaged in recent months . . .

Boeing revealed at the weekend that the software used on the Max training simulator was unable to reproduce some flight conditions, including the conditions which led to the crash of Ethiopian Airlines flight ET302 on March 10. The preliminary crash report from the Ethiopian authorities revealed that the pilots of that flight were flying at high speed and were unable to overcome the power of the MCAS system as it drove the plane’s nose down, by doing what Boeing had told them to do in such circumstances: use a manual wheel in the cockpit to bring the nose back up. 

. . . A spokesman for the American Airlines pilots union, Captain Jason Goldberg, said the latest revelation had further undermined pilots’ confidence in the aircraft manufacturer. “Again we seem to hear one thing from Boeing and then months later we hear something else. Boeing seems to have a penchant of telling us one thing in private and another in public.”
https://www.ft.com/content/494354da-799 ... 85092ab560

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Jun
Posts: 2050
Joined: Sun Aug 01, 2010 10:20 pm

Re: Boeing 737 Max8 Crashes

Post by Jun » Sun May 19, 2019 5:09 pm

fountainhall wrote:
Fri May 17, 2019 6:47 pm
Good news! But I see it has flown only 360 hours with the new software fix.
In other industries, the software would be tested by setting the entire system up and then deliberately introducing the sensor errors and seeing how the system responds. I would expect Boeing has done something similar, so this particular fix SHOULD be OK. If the authorities in the US and other countries do their jobs properly, they will check the evidence before allowing the plane back into service.

However, I will still try to avoid this plane until it has done 5 years in service, purely because of all the other unknown risks with a new product.

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