, 21 tweets, 9 min read Read on Twitter
Yesterday Ethiopian Airlines Boeing 737 Max 8 aircraft crashed over Kenya. Known as #UNShuttle it killed 22 UN workers (150 others). Meanwhile, a US embassy staff member was captured trying to enter Moscow’s Sheremetyevo airport carrying a bomb with a fuse tass.com/emergencies/10…
The 22 UN workers killed in the Ethiopian Airlines crash were travelling to the UNEP (United Nations Environment Programme) assembly in Kenya's capital Nairobi. Nairobi hosts the global headquarters of the UNEP and is the regional seat for many UN agencies
web.unep.org/environmentass…
Four months earlier when Boeing 737 Max 8 crashed into the Java Sea it was found that the pilots were struggling with the craft's Maneuvering Characteristics Augmentation System (MCAS) - one of plane's many brains which was stuck in anti-stall mode. theregister.co.uk/2018/11/27/boe…
With recent Ethiopian Airlines crash the MCAS designed to stop Boeing's 737 MAX 8 from stalling in mid-flight is coming under scrutiny. In both cases aircraft were just few months old & crashed minutes after takeoff; speculators say real-time MCAS testing.
aljazeera.com/news/2019/03/c…
"We are hearing that the problem was similar to the Lion Air accident; 'unreliable airspeed' and/or difficulty in controlling the aircraft, and both had asked to return to the airport," Gerry Soejatman, an aviation analyst based in Indonesia's capital, Jakarta
An initial investigation in the Lion Air accident suggested a faulty sensor had triggered the plane's automated MCAS system possibly resulting in the nose of the aircraft being pushed down. New planes do have issues, but they are usually solved before delivery.
MCAS were introduced in 737 MAX 8 in 2017 to equip new model with larger & more fuel-efficient engines. These were placed further forward and higher on the wing, altering the aircraft's balance. However this resulted in the plane's nose pitching upwards in certain circumstances.
To solve this problem Boeing added MCAS flight-control system which automatically pushed aircraft's nose down when sensor indicated plane was at risk of stalling. The climbing & diving behaviour of flight in both cases was result of pilot's struggle to overcome faulty MCAS.
Even Trump has banned all #Boeing737Max flights including most nations. And Norwegians are demanding Boeing to pay for all the grounding mess.
Controllers of crashed Ethiopian Airlines also observed that the aircraft, a new Boeing #737MAX8, was oscillating up and down by hundreds of feet - a sign that something was extraordinarily wrong - before disappearing from the radar while flying over a restricted military zone.
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Commercial Aircraft Corp of China (Comac) started test flights of C919 in 2017 received 815 orders from 28 customers. Meanwhile this number could grow as carriers across the world are losing trust in Boeing products with a wave of global airline carriers canceling #737MAX orders.
Comac said last year that China’s aviation market would take delivery of 9,000 planes, worth $1.3 trillion, over the next several decades. Two-thirds of those will be single-aisle planes similar to the Boeing #737MAX. Aerospace technology is the No. 1 target for China espionage.
A screw-like device found in the wreckage of Boeing #737MAX8 has provided investigators with an early clue into what happened. The jackscrew used to set the trim that raises and lowers the plane’s nose indicates the jet was configured to dive, based on a preliminary review.
Chinese national gets nearly four years in prison for hacking plot aimed at Boeing. High probability of sofisticated hacking can't be ruled out. Via @wave_singh

washingtontimes.com/news/2016/jul/…
“During the verification process of the FDR data, clear similarities were noted by the investigation team between Ethiopian Airlines Flight 302 and Lion Air Flight 610, which will be the subject of further study during the investigation.”
#737MAX8
An off-duty pilot who happened to be riding in the cockpit saved a diving Boeing #737MAX8. The next day, the same Lion Air jet crashed into the Java Sea, killing all 189 aboard bloom.bg/2TjIKVY
"On Lion Air flight MCAS was fed erroneous information from a sensor causing system to misfire, accident investigators into probe have said. In retrospect I expected them to have been more transparent on the MCAS"

- Mr. Gebremariam, Ethiopian Airlines

wsj.com/articles/ethio…
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