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There was no redundancy in the AoA sensor either.
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157 passengers and crew died in that incident.Īnd in both cases it was found that the wayward MCAS software was triggered on the planes by a faulty angle of attack sensor, sending inaccurate information about the nose-up attitude of the planes. Then on March 10, 2019, another new 737-MAX 8 crashed just after take-off from Addis Ababa in Ethiopia.
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On Octoa Lion Air Boeing 737-MAX 8 series plunged into the sea just off the Jakarta coast at over 800 kilometres an hour, killing all 189 people on board.īut even after the first crash, the aircraft manufacturers’ management would try and push the blame onto the dead pilots and the airline, Lion Air. In both crash cases, the flight crews battled for a number of minutes with the rogue software, unable to counteract the terrifying pitching of the nose downward.
737 max grounded how to#
And when the system went rogue, the pilots were unaware of how to disable the system that pushed the nose of the plane down when fed faulty information from the Angle of Attack sensor. The Boeing software engineers knew about it, but the pilots of the new 737 MAX didn’t. That software would be called MCAS, the Maneuvering Characteristics Augmentation System. No problem… come up with a software solution to re-trim the plane’s balance whilst it was flying. This new engine would alter the critical flight balance of the plane. Looking from the front of the plane it is clear that the top of the engine cowling is now above the wing, before it was below. For the ageing Boeing 737, closer to the ground, the larger engines were simply unable to fit under the wing so needed to be located both further forward, and mounted higher up on the wing.
The main difference was the original Airbus A320 design had a lot more ground clearance, allowing a larger engine to fit under the wing without changing the centre of gravity or centre of thrust.
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The newer, larger, turbo fan jet technology would offer a 10-15% reduction in fuel burn… that was very attractive to new customers after Airbus had offered a similar upgrade of the newer generation jet engines on their A320 platform… that aircraft would be called the A320 NEO (new engine options) and forced Boeing’s hand to come up with a competitive solution, quickly. To squeeze just one more model out of the old 737 design, without developing a new clean-sheet single-aisle jet, Boeing rushed into a series of mis-steps which eventually led to the deaths of 346 people. They were updates that wouldn’t require retraining for the pilots – a key cost for airlines introducing new model aircraft. Rory Kennedy presents a straightforward and sobering documentary “Downfall: The Case Against Boeing”, and nails the responsibility of the deaths of the 346 terrified passengers and crews, solely at the feet of a greedy and corporately flawed manufacturer.īoeing’s conduct, to regulators, to the families of the deceased passengers, to the stockholders, has been reprehensible throughout, and the documentary paints a vivid portrayal of a US manufacturer that still believes its own hubris and never taken responsibility for the deaths of the people who innocently bought tickets to sit in two, almost brand new, Boeing planes.īoeing originally launched the 737 back in 1967 and had twice rolled out updates for the platform. The software, originally developed to counteract unusual flying characteristics of the re-deigned 737 aircraft, turned out to be the disruptive, catastrophic trigger that led to the crashes of Lion Air Flight 610 and Ethiopian Airlines Flight 302. Defazioīefore the fatal crashes of two shiny new Boeing 737 Max jets, within 5 months in October 2018 and March 2019, almost no one outside the airline industry, even 737 pilots, had ever heard of MCAS, the Maneuvering Characteristics Augmentation System. It was corrupted, from the top, down, from pressures from Wall Street, plain and simple.”Ĭhair of the Committee on Transportation and Infrastructure – Peter A. “The safety culture at Boeing fell apart.
That Boeing, a proud US aviation technology manufacturer, ended up in its current predicament, is the subject of this Netflix documentary.
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