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lowing crashes March 10 in Ethiopia and October 29, 2018, in Indonesia that killed a total of 346 passengers and crew.
上海龙凤Preliminary investigations suggest the aircraft’s Maneuvering Characteristics Augmentation System (MCAS), an autom
ated anti-stall device, apparently forced the noses of Lion Air and Ethiopian Airlines flights down and into a fat
al plunge when it erroneously determined the planes were about to stall. To avoid a stall, MCAS points the nose of the plane down to gain air speed.上海龙凤
There are about 400 MAX jets in service worldwide, including about 97 in China. Wall Street analysts expect Boeing to spend abo
上海龙凤ut $1 billion to update and install new software worldwide to prevent the MCAS system from rep
eatedly pointing the nose of the plane down and to prevent the system from being activated by only one of two exterior sensors.上海龙凤品茶微信
In the interview with the news website Axios, Muilenburg refused to上海龙凤
say the MCAS system was a “red flag” during the MAX’s six-year development and cer
tification process. He said there were a “number of factors” involved in the fatal crashes.上海龙凤品茶微信
Earlier this month, Muilenburg said he expected some MAX jets to return to commercial service by
上海龙凤the end of the summer, but it could be months before the worldwide fleet returns to the air. Boe
上海龙凤品茶微信ing said it has completed the software update for the MCAS system and has tested it on 207 flights totaling 360 hours. The
US Federal Aviation Administration has not said when its review of the updated software will be completed.
hroughout the world, with a history of more than 2,000 years. In 2006, the traditional festival was listed as part of China’s
national intangible cultural heritage. In 2008, it was recognized as a public holiday in the Chinese mainland.
The Dragon Boat Festival commemorates the death of Qu Yuan, a Chu state
official and poet who lived during the Warring States Period (475-221 BC) before the reu
nification of China under the Qin Dynasty (221-206 BC). He was exiled after opposing his king’s decision to ally wit
h the neighboring state of Qin, and when Chu was finally conquered by Qin, he
committed suicide by drowning in the Miluo River on the fifth day of the fifth lunar month.
The Chu people, who admired Qu Yuan for his loyalty and integrity, th
rew rice dumplings into the river to feed the fish so they would not eat the body of their po
et hero. People then started dragon boat racing to scare off the fish.
Since then, the fifth day of the fifth month on the lunar calendar is cel
brated as the Dragon Boat Festival. The following are some customs for the festival.