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This is a major shift in Boeing's operation philosophy and design that has been under-discussed It was the "culture of concealment" coupled with "grossly insufficient oversight by the FAA.". Preliminary investigations revealed serious flight control problems that traumatized passengers and crew on the aircraft's previous flight, as well as signs of angle-of-attack (AoA) sensor and other instrument failures on that and previous flights, tied to a design flaw involving the Maneuvering Characteristics Augmentation System(MCAS) of the 737 MAX series. In retrospect, it is not really the lines of code that were the problem. Bjorn has said he would pilot the MAX as well as fly in it as a passenger. I have talked many times with a couple of my pilot friends that pilots have become dependent on computers and are losing valuable skills in the air. Both flights were operating the same plane: the Boeing 737 Max 8. I worked on 2 fighters, problem #1 was WRONG computer language being used for the planes, has to be functional language, not procedural. All eventualities, even remote ones, should be covered. To make MCAS safe, we only needed the correct reset criteria. On top of the dual-sensor activation of MCAS, its global authority, no matter what, is limited. "This airplane has undergone an unprecedented level of scrutiny by the FAA," Dickson said. 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 Progressive agenda is dead. 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. On 10 March 2019, the Boeing 737 MAX 8 aircraft which operated the flight crashed near the town of Bishoftu six minutes after takeoff, killing all 157 people aboard. (3) the aircraft was built with an inferior wing that should have been built specifically for the aircraft. "We have not left anything to chance here. The Seattle Times has an excellent article on what happened in both crashes that is very readable by a lay person. doesn't combine failure of any one facet of control with others. Most people will don't pay attention to the type of aircraft they fly. Here's the inside scoop on exactly what caused the crashes. I read several articles that explained that Boeing, in an attempt to compete with a new AirBus plane that was superior in design, decided to use larger engines than the Max was initially designed to use......which is what led to the need for the sophisticated fly-by-wire override in the first place. After all they seemed callus and 'too big' to be challenged. The FAA certified the Boeing 737 Max on Wednesday. But airlines around the world have cancelled and delayed orders since the pandemic. 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. U.S. aviation officials believe a bird strike may have caused a Boeing 737 Max to crash in March. Understanding the Boeing 737 Max accident cause will hopefully explain some of this mystery. The cause of the accident is under investigation. 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. Airlines will now phase out the name "max" and refer to teh plane as 737-8. 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. Don't blame the contractors who wrote the code. They had to provide Boeing with development plans, system requirements, module requirements, code reviews, test plans, and test reviews. (b) the MAX is the first commercial Boeing aircraft that employs the Airbus aircraft management system -- the aircraft is in charge and the pilot is an assistant. Your California Privacy Rights/Privacy Policy, Download the latest version of the USA TODAY app on your. My experience in watching air crashes is, after a while, memory fades. The Boeing 737 MAX is a redesigned version of the Boeing 737, which is the workhorse of many airlines globally. It also put forward training requirements for pilots and maintenance requirements for airlines. 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. 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. Investigators believe they know what caused an Ethiopian Airlines Boeing 737 MAX 8 to crash, leading to the deaths of the 149 passengers and eight crew members onboard. The first Boeing 737 Max crash was 2 years ago today. The two plane crashes - one in Indonesia, the other in Ethiopia - that led to the worldwide grounding of Boeing 737 MAX 8 planes displayed similarities that linked them right away. Nov 19, 2020. The Boeing 737 Max has been in the news because of two crashes, practically back to back and involving brand new airplanes. I have long wondered why Boeing's purchase of McDonnel-Douglas (sp?) From everything I have read it sounds like someone or some folks should be doing some serious time for this fiasco. https://www.usatoday.com/.../interactivestory-experienceid-737/4596125002 Lion Air’s Boeing 737 MAX 8, along with the Ethiopian aircraft, were both just a few months old before crashing from the sky, raising concerns there could be an issue with the aircraft. From the addendum, "Boeing assumed that the pilots would realize what was wrong and react appropriately within four seconds. As a former USAF pilot, I am mystified by the lack of a simple "disconnect" button on the control column that would allow the pilot to disconnect the computerized system in the event that the system is overriding his manual input regarding trim. The plane's return to the skies will not be immediate, however. 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 crashes of two Boeing Co. 737 Max jets in five months have focused attention on a little-known device that malfunctioned, starting a chain reaction that sent the planes into deadly dives. Wrong computer language used for control, has to be functional, not procedural. I would guess the software wasn't developed and tested in the US. Today: The crash of two Boeing 737 Max jets has been linked to a new software system that helped send the planes into a deadly nose-dive. Going forward, who knows. More than 10 months later, nearly 500 MAX jets remain grounded, and orders for thousands more are in limbo. 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). A second 737 Max crash raises questions about airplane automation. It is more fuel-efficient than the 737… The two plane crashes - one in Indonesia, the other in Ethiopia - that led to the worldwide grounding of Boeing 737 MAX 8 planes displayed similarities that linked them right away. Ethiopian Airline crash was preceded by the Lion Air fatal flight of the Boeing 737 MAX in October, 2018. In a Fox News interview today, Trump admits his Supreme Court problem. David Slotnick We can assume that any pilot who flies the airplane knows all about the problem now and has been vetted on the new system....and probably could avoid the problem in the first place by not taking the plane to the angle where it becomes vulnerable to misbehave. On March 13, 2019, the FAA temporarily grounded all Boeing 737 MAX 8 and MAX 9 aircraft. New York has a projected $8.7 billion deficit in the new fiscal year and is hoping for federal relief. "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. Boeing believed an upgraded 737 jet, the favorite child in its aircraft family, would help it retain market share in the fiercely competitive aviation industry. An alarm would have been indicated as soon as any of the three sensors did not agree within a designated tolerance. Boeing knew about this flaw in 2017, a year before the crashes, but didn’t consider it critical.". 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. We used a PHA (Process Hazard Analysis) method which would have easily identified the issues with the MCAS. Anyway, what if Boeing had have had a competitor? Before the crashes, Boeing churned out more than 50 of the popular 737 Max per month. Over 10,000 Boeing 737 aircraft fly around the globe, and the aircraft has had a successful safety record over 5 decades . It is called "Runaway Trim" and the procedure is to turn off the auto-trim function and trim by hand. Understanding the Boeing 737 Max Accident Cause. The root cause has nothing to do with the design of the airplane, the balance fore and aft, or the position of the engines. Forget it. FAA Certifies the Boeing 737 Max. The Boeing 737 Max is the latest version of the popular Boeing 737 airliner. DO-178 is the standard process to be followed for airborne software. It has not changed much aerodynamically. Executives couldn’t keep up with the 787’s complex manufacturing process. In October, Lion Air Flight 610 crashed in Indonesia, killing 189 people. On Wednesday, November 18, 2020, the FAA Cleared Boeing's 737 Max To Resume Passenger Service. ", After the FAA announcement, the Air Line Pilots Association released a statement saying it "believes that the engineering fixes to the flight-critical aircraft systems are sound and will be an effective component that leads to the safe return to service of the 737 MAX.". 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. American Airlines put out a statement that they would identify the MAX during booking, and that if you found yourself switched to one at the gate, they would accommodate you if you wanted a different aircraft. Although the results of both investigations pointed out to one mutual link related to the faulty MCAS system, the rest of the factors contrasted. 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. was not an anti-trust issue. 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. The Boeing 737 Max is, in essence, an upgrade to the most popular plane in the sky, the Boeing 737. With better code there wouldn't have been a crash, but a whole lot more things went wrong. Nice seats...good wifi...lots of comfortable amenities compared with the old 737’s.....only had that one little problem....hehehe. The 737 Max was grounded March 13, three days after the crash in Ethiopia, costing Boeing $9.2 billion and counting. Centralised system gives major failure when it goes into error. 450 aircraft are grounded worth about $45 billion. A single sensor no longer triggers MCAS. Lion Air and Ethiopian Crashes Differ. The Max 7 and 10 models, not yet delivered, are due for roll-out in the next few years. (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. 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 airplane was the latest version of the Boeing 737, a gleaming new 737 Max that was delivered merely three months before. The problem still needed to be fixed but these pilots were not properly trained to fly this plane. I talked this over with software manager for a major fighter, she admitted I was right. It was just two months old and with 800 hours under its belt, so experts are baffled as to what exactly caused the 737 MAX 8 to crash. "MCAS went from a Pilot assist to a highly hazardous function by this single mistake in the MCAS software code. 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. I flew on these planes a few times before they were grounded. The Boeing 737 Max is, in essence, an upgrade to the most popular plane in the sky, the Boeing 737. A lot more went wrong. I used to fly a lot pre-Covid. Let's start with a review by Law.Com. In 2017, the 737 MAX entered service. After greenlighting big spending bills under President Trump, expect an abrupt change in the attitudes of Congress. Had a few lines of code been properly placed, there would not have been two crashes or 20 months of grounding even though other safety features were needed. 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. What caused the Boeing 737 Max to crash? It was functional only if the airline had paid for an optional extra that added the AOA reading on the primary flight display. I disagree with the findings in two very specific ways: Culture of concealment is common in corporate America. I haven't designed any flight control systems but I have designed many process automation systems. Boeing Proposal. 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. Where to start? The original MCAS listened to the Speed Trim reset, “the Pilot trims,” instead of the correct “AoA is below the threshold again.”. But as the investigations dug deeper into how Boeing and FAA could miss how dangerous the original MCAS was, the requirements for changes grew. 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 … Here’s the inside scoop on exactly what caused the crashes. Could that have changed their behavior? That, in turn, led to the creation of the Maneuvering Characteristics Augmentation System (MCAS). With the max and computer error they just decided to be able to blame the pilots :( . Still, it is an important change for Boeing that was "shoved under the carpet". The FAA is requiring a series of design changes laid out in a 115-page directive. Generally speaking, modern airliners are designed to be flown almost from takeoff to landing by computerized autopilot systems. It's complicated. In addition to this change, Boeing has made additional changes to increase safety further. You get what you pay for. The Pilot always has enough pitch control to fly the aircraft. Most likely India. Independent 3rd party auditing, but open to public scrutiny? A small number of Boeing's Max 9s are also operating. Here's the complete history of the plane that's been grounded since 2 crashes killed 346 people 5 months apart. Boeing’s troubles were evident before the 737 Max crash. That being said Boeing seems to have some serious QC issues. The interface of human/machine is fraught with peril, even more so when the machine fights with the human for control. 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 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. Boeing 737 Max: What’s Happened After the 2 Deadly Crashes ... See how MCAS may have helped cause the two crashes » ... Until the two crashes, the Max was Boeing’s most successful plane ever. If a … 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. Hence the requirement for MCAS so that the aircraft can operate safely. 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. The 737 MAX 8 has heavier and more fuel-efficient engines than prior editions of the 737, a change which causes the aircraft to pitch upwards ever-so-slightly after takeoff. If the two pilots had performed the correct procedures this would have never happened. Claims of election fraud keep circulating, and circulating, and circulating. 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. Hard to build redundancy into a computerised system where workable management is dependent on every input and calculation being correct. The Verge spoke to a dozen pilots, instructors, engineers, and experts about the 737 Max and its development, rollout, and the two crashes that have claimed the lives of 346 people. 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. The first crash killed 189 people, the second crash killed 157. The single sensor, changing the authority of the MCAS to 5× the original value without re-evaluating everything and without resubmitting the designs (which is a felony), regulators and industry in bed with each other, regulators outsourcing their own work to Boeing, an old design with motors too heavy and large requiring them to be hung to far to the front and changing the flights envelope. They had 4 seconds to get it right. Investigators found a "culture of concealment" as well as "grossly insufficient oversight by the FAA. The 737 Max was grounded March 13, three days after the crash in Ethiopia, costing Boeing $9.2 billion and counting. they will want to review these things themselves and not believe the Americans...who can blame them 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. The crashes of two Boeing Co. 737 Max jets in five months have focused attention on a little-known device that malfunctioned, starting a chain reaction that sent the planes into deadly dives. Also Boeing's space operations have been getting their doors blown off by Elon Musk/SpaceX. This has happened mechanically as well on other aircraft previously, a design error for example , but then the first thing they do is ground all aircraft until cause is known. In a lame duck session, stalled negotiations over coronavirus relief showed signs of new life Tuesday. The Boeing 737 Max has been grounded since March of 2019 after two aircraft crashes killing everyone on board. Now the truth is that there is nothing wrong with the concept of an unstable aircraft (that's how military aircraft operate) and that's to a certain extent how Airbus aircraft function. Congress is on a week long holiday as unemployment claims rise. An Appeals Court (All 3 Members Appointed by Republicans) issue a scathing ruling against Trump. 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. Boeing is out $20 billion, not counting pending lawsuits. They are augmentation functions, i.e., good to have but not necessary). Two fatal crashes that killed a total of 346 people were caused by mistaken assumptions about “human-machine interaction” in the design of the aircraft, a Boeing executive has claimed. The BA CEO was shown the door taking a benefits package worth $62 Million with him. FAA Cleared Boeing's 737 Max To Resume Passenger Service, The MCAS (Maneuver Characteristics Augmentation System) software was inaccurately classified as non “hazardous.”. Again QC issues slowing them down big time. There are multiple reasons Trump's Supreme Court strategy will fail. Happened with the DC1- and the Lockheed Electra, and earlier, with the British Comet. What caused the Boeing 737 Max to crash? They not only failed to do this but never pulled the power back and let the plane go uncontrollable. After 6 months to a year of safe operations, I think the MAX will be accepted. The Ethiopian Airlines jet went down less than five months after another 737 Max crashed in … Re-designing an airplane from scratch would take too long, so Boeing built upon the 737’s old and outdated design instead. It fixed the angle-of-attack problem in most situations, but it created new problems in other situations when it made it difficult for pilots to directly control the plane without being overridden by the MCAS.”. But time will tell. ", "Neither Lion Air nor Ethiopian Airlines had paid for that option. But instead the latest technology has been used. The second deadly crash of a Boeing 737 Max model airplane within months of the first has put flyers around the world on edge. ", Leeham News author Bjorn Fehrm has interesting details in his take  FAA recertifies Boeing 737 MAX. Black box data from a doomed Ethiopian Airlines flight suggests the crash was caused by a faulty sensor that erroneously activated an automated system on the Boeing 737 Max… The Boeing 737 first flew in … Boeing 737 Crashes Caused by a Few Lines of Missing Code. 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. The root cause has nothing to do with the design of the airplane, the balance fore and aft, or the position of the engines. Boeing faces fines, lawsuits, and accusations of rushing the aircraft into production. The full interactive story explaining the MACS can be found within the Augmented Reality section of the USA TODAY app. The inaccurate classification allowed a single sensor to control the MCAS. Open the app, and look for Augmented Reality in Sections at the bottom of your screen. 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. The first crash killed 189 people, the second crash killed 157. In fact, there is normally a circuit breaker that would disable the trim augmentation in the event of what is known as "runaway trim". If a pilot cannot fly the airplane from takeoff to landing manually, then he isn't really a qualified pilot. He is fully responsible for the destruction of boeing reputation. Fehrm says "The 737 is a Safe Aircraft" and this "chain of events will not happen again on an updated 737 MAX". SOMEONE ASKED ME – REGARDING THE BEING 737 MAX CRASH , YOU HAVE WRITTEN THIS-QUOTE : A plane’s aerodynamic … While developing the fix for MCAS, the FAA discovered a separate problem, which is that a very unlikely glitch in the microprocessor inside the jet’s flight control computer could theoretically create a similar scenario to the two crashes even without MCAS activating. For those who blame pilot error, note that "Boeing assumed that the pilots would realize what was wrong and react appropriately within four seconds" without even being aware there was an MACS fighting their decisions. More seeds of the 737 Max crashes were sown in 2011 when American Airlines announced their plans to purchase 460 jets from Airbus. But there again you can’t believe everything you read I guess. Regulators, airlines, and Boeing need to grapple with how much information pilots are given as systems become more complex. Both crashes involved the same model of plane — Boeing's 737 MAX 8 — and both pilots reported flight control issues, causing aviation authorities to ground the model around the world. 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. The Boeing 737 Max has been grounded since March of 2019 after two aircraft crashes killing everyone on board. Boeing was aware of issues but did not disclose them to pilots or the FAA. Trump's demands go beyond stupid to unquestionably illegal. The report tentatively attributed the accident t… The Boeing 737 Max has been grounded since March of 2019 after two aircraft crashes killing everyone on board. Cozy Washington relations? The Indonesian National Transportation Safety Committee (KNKT) final Lion Air JT610 737 MAX accident investigation report lists 89 findings explaining what factors caused the aircraft to crash … Here's the inside scoop on exactly what caused the crashes. Ethiopian Airlines Flight 302 crashed Sunday with 157 passengers and crew aboard. Mistrust of Boeing and the 737 Max will last for years. The first crash killed 189 people, the second crash killed 157. A new system added to the upgraded 737 MAX , the Maneuvering Characteristics Augmentation System (MCAS), has been linked to both crashes. Mish. It is the same as the current "self driving" vehicles--where the driver is supposed to be in "watchful attendance" to the driving process. The passengers on board the new Boeing 737 Max represented … 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. Only 2 biggies - and they merge? The culture of concealment is former`s CEO Dennis Muilenburg way of doing things to inflate company stock valuation. As Bjorn Ferhm said in his LNA piece, the 737 (airframe) is basically a safe aircraft with a 50 year history. Employers started calling back workers to their downtown offices but another spike in Covid put an end to it. To access "737: What went wrong": Video preview of the augmented reality interactive “737 MAX: What went wrong”. FAA Certifies the Boeing 737 Max. ", "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,", "Although Boeing had installed a warning light to alert the pilot if the two AOA vanes disagreed, because of a software error this didn’t work. All well and good until the GRU is able to hack the max. Airbus was not a big competitor back then. By people who have probably never flown in an airplane. Boeing had to sign off all those reviews. It is hard to believe that there isn't some type of international standard for the development of aircraft flight control systems like there is for process control systems (ISA 84). A congressman bluntly declared Wednesday that “pilots trained in the United States would have successfully been able to handle” the circumstances that led to two crashes of Boeing's 737 MAX. Flying isn't free so caveat emptor. 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.. On 9 March, 2020, the interim report into the crash was released by the Ethiopian Aircraft Accident Investigation Bureau. We collaborated with pilots, engineers and safety experts to create a comprehensive proposal calling for current 737-8 and 737-9 pilots to complete additional training, thoroughly review technical documentation and demonstrate their knowledge in a … I swore I'd never set foot in a MAX, but I guess I'll start riding them when I forget about the crashes.

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