Your California Privacy Rights/Privacy Policy, Download the latest version of the USA TODAY app on your. Ethiopian Airline crash was preceded by the Lion Air fatal flight of the Boeing 737 MAX in October, 2018. (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. Hence the requirement for MCAS so that the aircraft can operate safely. 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. The first crash killed 189 people, the second crash killed 157. He's nothing more than a highly-paid computer operator. The inaccurate classification allowed a single sensor to control the MCAS. 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. FAA Certifies the Boeing 737 Max. The Max 7 and 10 models, not yet delivered, are due for roll-out in the next few years. DO-178 is the standard process to be followed for airborne software. After all they seemed callus and 'too big' to be challenged. Nov 19, 2020. Nice seats...good wifi...lots of comfortable amenities compared with the old 737’s.....only had that one little problem....hehehe. 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. 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. 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… 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). ", "Neither Lion Air nor Ethiopian Airlines had paid for that option. 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 had to sign off all those reviews. The original MCAS listened to the Speed Trim reset, “the Pilot trims,” instead of the correct “AoA is below the threshold again.”. I swore I'd never set foot in a MAX, but I guess I'll start riding them when I forget about the crashes. Where to start? An alarm would have been indicated as soon as any of the three sensors did not agree within a designated tolerance. In addition to this change, Boeing has made additional changes to increase safety further. 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. Boeing’s troubles were evident before the 737 Max crash. 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. 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. After 6 months to a year of safe operations, I think the MAX will be accepted. 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. Cozy Washington relations? Boeing faces fines, lawsuits, and accusations of rushing the aircraft into production. Could that have changed their behavior? (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. The Boeing 787 project went over budget by $12-18 billion, with delays and unexpected costs as the culprits. Boeing Proposal. "We have not left anything to chance here. A lot more went wrong. Here's the inside scoop on exactly what caused the crashes. If a … In fact, there is normally a circuit breaker that would disable the trim augmentation in the event of what is known as "runaway trim". In 2017, the 737 MAX entered service. In a lame duck session, stalled negotiations over coronavirus relief showed signs of new life Tuesday. 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). Open the app, and look for Augmented Reality in Sections at the bottom of your screen. In October, Lion Air Flight 610 crashed in Indonesia, killing 189 people. "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 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. The Progressive agenda is dead. Airbus was not a big competitor back then. Most people will don't pay attention to the type of aircraft they fly. But instead the latest technology has been used. 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. In retrospect, it is not really the lines of code that were the problem. FAA Cleared Boeing's 737 Max To Resume Passenger Service, The MCAS (Maneuver Characteristics Augmentation System) software was inaccurately classified as non “hazardous.”. Also Boeing's space operations have been getting their doors blown off by Elon Musk/SpaceX. The Ethiopian Airlines jet went down less than five months after another 737 Max crashed in … Centralised system gives major failure when it goes into error. You get what you pay for. New York has a projected $8.7 billion deficit in the new fiscal year and is hoping for federal relief. All eventualities, even remote ones, should be covered. An Appeals Court (All 3 Members Appointed by Republicans) issue a scathing ruling against Trump. 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. 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. It has not changed much aerodynamically. Investigators found a "culture of concealment" as well as "grossly insufficient oversight by the FAA. Hard to build redundancy into a computerised system where workable management is dependent on every input and calculation being correct. The aircraft maintenance records indicated that the AoA Sensor was just replaced before the accident flight. Understanding the Boeing 737 Max accident cause will hopefully explain some of this mystery. Here's the inside scoop on exactly what caused the crashes. The 737 Max was grounded March 13, three days after the crash in Ethiopia, costing Boeing $9.2 billion and counting. 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. Boeing knew about this flaw in 2017, a year before the crashes, but didn’t consider it critical.". On top of the dual-sensor activation of MCAS, its global authority, no matter what, is limited. Flying isn't free so caveat emptor. By people who have probably never flown in an airplane. 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 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 was aware of issues but did not disclose them to pilots or the FAA. 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. A single sensor no longer triggers MCAS. Don't blame the contractors who wrote the code. I disagree with the findings in two very specific ways: 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. The problem still needed to be fixed but these pilots were not properly trained to fly this plane. Here’s the inside scoop on exactly what caused the crashes. The first crash killed 189 people, the second crash killed 157. 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.
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