Pilots need to be able to manually override any computerized control systems and also need to be able to trim the flight controls independent of the augmentation system. The report tentatively attributed the accident t… A series of failures led to the crash of a Lion Air flight, which killed 189 people and led to the grounding of the Boeing 737 Max, a report has found. Investigators found a "culture of concealment" as well as "grossly insufficient oversight by the FAA. CRASH OF BOEING 737 MAX FLIGHT, ROOT CAUSE ANALYSIS – CAPT AJIT VADAKAYIL. A single sensor no longer triggers MCAS. I swore I'd never set foot in a MAX, but I guess I'll start riding them when I forget about the crashes. Except, for most people, over time they drift into a deeper reverie, where the first reaction to an oncoming incident is over-reaction to something that has been ignored slightly too long. In October 2018 and March 2019, two fatal crashes of 737 MAX aircraft occurred due to software error in the MAX's Maneuvering Characteristics Augmentation System leading to a worldwide grounding of all 737 MAX aircraft. The first Boeing 737 Max crash was 2 years ago today. The aircraft maintenance records indicated that the AoA Sensor was just replaced before the accident flight. After all they seemed callus and 'too big' to be challenged. Ethiopian Airlines Flight 302 crashed Sunday with 157 passengers and crew aboard. David Slotnick What caused the Boeing 737 Max to crash? Both AoA sensors on the 737 MAX have to agree on the aircraft AoA, or Speed Trim including MCAS is deactivated (neither is needed to fly the plane. Nice seats...good wifi...lots of comfortable amenities compared with the old 737’s.....only had that one little problem....hehehe. Going forward, who knows. The Boeing 737 Max is, in essence, an upgrade to the most popular plane in the sky, the Boeing 737. There are multiple reasons Trump's Supreme Court strategy will fail. It would have been classified as a SIS (Safety Instrumented System) and with the hazard this high it would have used probably three AOA sensors, each of different type (to prevent a common mode failure) with 2oo3 (Two out of three voting) for any control action and at least two if not three processors (in case there was a failure with one processor). The second deadly crash of a Boeing 737 Max model airplane within months of the first has put flyers around the world on edge. The inaccurate classification allowed a single sensor to control the MCAS. On top of the dual-sensor activation of MCAS, its global authority, no matter what, is limited. After greenlighting big spending bills under President Trump, expect an abrupt change in the attitudes of Congress. Boeing’s unfortunate insistence on not providing the pilots simulator and system training on aspects unique to the 737 MAX contributed to both the Lion Air and Ethiopian Airlines crashes. Mish. Again QC issues slowing them down big time. After 20 months on the tarmac following two fatal crashes, Boeing's troubled 737 Max airliner has been given the green light to resume passenger flights, the Federal Aviation Administration announced Wednesday. But instead the latest technology has been used. The Boeing 787 project went over budget by $12-18 billion, with delays and unexpected costs as the culprits. But time will tell. "This airplane has undergone an unprecedented level of scrutiny by the FAA," Dickson said. I expect the plane will be fine, given the scrutiny and the level of attention given to the problem and its software fix....but the underlying problem with the aircraft not handling well at certain angles of attack is not going to go away. "moving the engine nacelle (and a related change to the nose of the plane) changed the aerodynamics of the plane, such that the plane did not handle properly at a high angle of attack. The Max 7 and 10 models, not yet delivered, are due for roll-out in the next few years. More than 10 months later, nearly 500 MAX jets remain grounded, and orders for thousands more are in limbo. Flying isn't free so caveat emptor. For days after the second fatal crash of a Boeing Co. 737 Max last year, one nation after another halted flights on the beleaguered jetliner. Re-designing an airplane from scratch would take too long, so Boeing built upon the 737’s old and outdated design instead. Nov 19, 2020. In October, Lion Air Flight 610 crashed in Indonesia, killing 189 people. The alternative would have been to go back to the drawing board and design a new plane from scratch....which they decided would cost too much and take too long. Here's the inside scoop on exactly what caused the crashes. The fatal airplane crash on Sunday involving a Boeing 737 MAX 8 operated by the Ethiopian Airlines has put Boeing’s twin engine jet series under intense scrutiny worldwide. New York has a projected $8.7 billion deficit in the new fiscal year and is hoping for federal relief. My Boeing contact who sent me the Leeham article notes Bjorn Fehrm is a former fighter test pilot and an aero engineer based in France. It was the "culture of concealment" coupled with "grossly insufficient oversight by the FAA.". The Pilot always has enough pitch control to fly the aircraft. One year has already passed since the crash of Ethiopian Airlines Boeing 737 MAX flight 302 killing 157 people on board on 10 March, 2019. Happened with the DC1- and the Lockheed Electra, and earlier, with the British Comet. The FAA certified the Boeing 737 Max on Wednesday. Usually it is found that disasters occur in those systems through unusual combination of simultaneous failure, whereas with the max failure was inbuilt to keep going to disaster repeatedly until the whole system was redesigned. In a Fox News interview today, Trump admits his Supreme Court problem. The problem still needed to be fixed but these pilots were not properly trained to fly this plane. I disagree with the findings in two very specific ways: The BA CEO was shown the door taking a benefits package worth $62 Million with him. Much of the discussion in from a pilot's perspective that is hard to follow but the key details are easy to understand even if you do not understand the terminology. Ethiopian Airlines Flight 302 was a scheduled international passenger flight from Addis Ababa Bole International Airport in Ethiopia to Jomo Kenyatta International Airport in Nairobi, Kenya. Over 10,000 Boeing 737 aircraft fly around the globe, and the aircraft has had a successful safety record over 5 decades . Independent 3rd party auditing, but open to public scrutiny? The first crash killed 189 people, the second crash killed 157. The root cause has nothing to do with the design of the airplane, the balance fore and aft, or the position of the engines. Les circonstances du crash du Boeing 737 Max d’Ethiopian Airlines, qui a coûté la vie à 157 personnes dimanche, rappellent le crash du vol Lion Air d’octobre 2018. problem #2 was no accountability - company afraid to confess failures, self-interest, govt won't confess up, doesn't want to look bad, self-interest feeding each other's coverup. That being said Boeing seems to have some serious QC issues. I wouldn’t afraid to fly on one.....but that doesn’t make it a great airplane....and I think saying that a few lines of code “fixed the problem” is a little misleading. Airbus was not a big competitor back then. To access "737: What went wrong": Video preview of the augmented reality interactive “737 MAX: What went wrong”. Could that have changed their behavior? US regulators have approved Boeing’s 737 Max to fly once more, 20 months after the manufacturer’s bestselling plane was grounded following two fatal crashes caused by design flaws. It is more fuel-efficient than the 737… I describe the above in sufficient detail so we can understand how little in MCAS needed change to take it from a hazardous function to one that would have caused no trouble if wrongly triggered. The first crash killed 189 people, the second crash killed 157. I have long wondered why Boeing's purchase of McDonnel-Douglas (sp?) Understanding the Boeing 737 Max Accident Cause. Boeing’s troubles were evident before the 737 Max crash. The passengers on board the new Boeing 737 Max represented … The 737 Max was grounded March 13, three days after the crash in Ethiopia, costing Boeing $9.2 billion and counting. The Boeing 737 Max has been grounded since March of 2019 after two aircraft crashes killing everyone on board. Both flights were operating the same plane: the Boeing 737 Max 8. Boeing 737 Crashes Caused by a Few Lines of Missing Code. The FAA certified the Boeing 737 Max on Wednesday. As per allegations, the new anti-stall system put in by Boeing in its jets might be responsible for the crash, as it overtook the manual control of the pilots as the angle of attack of the plane went out of control. Don't blame the contractors who wrote the code. Employers started calling back workers to their downtown offices but another spike in Covid put an end to it. The Ethiopian Airlines jet went down less than five months after another 737 Max crashed in … Understanding the Boeing 737 Max accident cause will hopefully explain some of this mystery. In retrospect, it is not really the lines of code that were the problem. He's nothing more than a highly-paid computer operator. Anyway, what if Boeing had have had a competitor? And in June 2018, before the first crash, another Boeing engineering memo acknowledged that a slow reaction by the pilots, if they took 10 seconds to react instead of four, would be “catastrophic.” These memos produced no change to the design. The Seattle Times has an excellent article on what happened in both crashes that is very readable by a lay person. A second Boeing 757 Max within 4 months crashed in Ethiopia this Sunday and now a system within the jet is being blamed for the crash. The reason? In fact, there is normally a circuit breaker that would disable the trim augmentation in the event of what is known as "runaway trim". It is called "Runaway Trim" and the procedure is to turn off the auto-trim function and trim by hand. Boeing’s troubled 737 MAX is expected to take flight again next week -- but in an apparent rebranding move, some airlines are already trying to hide the name. The proximate cause of two 737 Max airplane crashes in fewer than five months appears to have been a single malfunctioning sensor—an angle-of … The original MCAS listened to the Speed Trim reset, “the Pilot trims,” instead of the correct “AoA is below the threshold again.”. Also Boeing's space operations have been getting their doors blown off by Elon Musk/SpaceX. On 9 March, 2020, the interim report into the crash was released by the Ethiopian Aircraft Accident Investigation Bureau. After 6 months to a year of safe operations, I think the MAX will be accepted. From the addendum, "Boeing assumed that the pilots would realize what was wrong and react appropriately within four seconds. was not an anti-trust issue. (a) The aircraft is certified in the US but not in Europe or Asia -- they will see that the FAA was coopted by Boeing in its approval process. Nothing has changed, don't get, fly, or ride first models of anything until the bugs have been worked out by a few years of use. The first crash killed 189 people, the second crash killed 157. If the two pilots had performed the correct procedures this would have never happened. Generally speaking, modern airliners are designed to be flown almost from takeoff to landing by computerized autopilot systems. Wrong computer language used for control, has to be functional, not procedural. THE TRAINED THINKERS OF THE PLANET ARE RUNNING AROUND LIKE LITTLE BO PEEP FOR THE PAST 6 DAYS IT IS A DISGRACE THAT A BLOGGER HAS TO WRITE ALL THIS.. Only 2 biggies - and they merge? The airplane was the latest version of the Boeing 737, a gleaming new 737 Max that was delivered merely three months before. They had 4 seconds to get it right. Bjorn has said he would pilot the MAX as well as fly in it as a passenger. Here's the inside scoop on exactly what caused the crashes. An alarm would have been indicated as soon as any of the three sensors did not agree within a designated tolerance. But as the investigations dug deeper into how Boeing and FAA could miss how dangerous the original MCAS was, the requirements for changes grew. The October 29 Lion Air 610 crash, which killed 189 people, was likely caused by Boeing's failure to inform pilots about critical changes to the 737 MAX's anti-stall capabilities. Since then, 346 people died in two 737 MAX crashes: a Lion Air plane crashed on October 29, 2018 after taking off in Indonesia (189 died) and an Ethiopian Airlines plane crashed after taking off in Ethiopia on March 10, 2019 (157 died). The cause of the accident is under investigation. Here’s the inside scoop on exactly what caused the crashes. It also put forward training requirements for pilots and maintenance requirements for airlines. A screw-like device found in the wreckage of the Boeing Co. 737 Max that crashed last Sunday in Ethiopia indicates the plane was configured to dive, a … To make MCAS safe, we only needed the correct reset criteria. ", Leeham News author Bjorn Fehrm has interesting details in his take FAA recertifies Boeing 737 MAX. Before the crashes, Boeing churned out more than 50 of the popular 737 Max per month. Boeing had to sign off all those reviews. Open the app, and look for Augmented Reality in Sections at the bottom of your screen. He is fully responsible for the destruction of boeing reputation. It is the same as the current "self driving" vehicles--where the driver is supposed to be in "watchful attendance" to the driving process.
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