Go around hopeless! Another fatal defect of Boeing 737max after production suspension

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 Go around hopeless! Another fatal defect of Boeing 737max after production suspension


Washington, Jan. 6 (peoples daily) - just as Boeing is trying to return the 737max to the blue sky, the new problems found on the 737max are far more than the software problems in two fatal air crashes, the New York Times reported on Jan. 5. Boeing and regulators scrutinized all aspects of the aircraft and found new potential design flaws.

According to a senior Boeing engineer, at the request of the Federal Aviation Administration, Boeing conducted an internal audit in December last year and found that the most urgent problem was the wiring problem at the tail of the Boeing 737Max, which was a newly discovered problem. Boeing is studying whether the two critical lines at the tail of the plane are too close together, which may cause a short circuit.

Boeing found that if the two wires near the tail of the plane were short circuited, it could cause the plane to crash. These two wires are connected to the motor of the control stabilizer, the horizontal fin at the tail of the aircraft, and send signals from the flight control computer to push the nose down or up. Boeings senior engineer said that once the wires were short circuited, if the pilot didnt realize the problem and took measures quickly, the aircraft could dive and crash, just like the two crashes caused by the maneuverability enhancement system (MCAS) of the 737max.

Boeing reportedly informed the Federal Aviation Administration last month of potential vulnerabilities. In addition to the 737max series, it is also necessary to investigate whether the 737NG has the same problem. About 6800 of these models are currently in service. Boeing is still working on the possibility of a short circuit in the wires and whether it needs to separate the wires on some 800 737max aircraft it has built, people familiar with the matter said. Boeing does not want to change the aircrafts circuits unnecessarily, fearing additional damage during maintenance. Boeing said the problem is relatively simple to fix if needed.

(function() {(window. Slotbydup = window. Slotbydup| []). Push ({ID: u5811557, container: ssp_, async: true});))) (); Boeing also informed the Federal Aviation Administration that they found another quality problem, which made the 737max engine vulnerable to lightning strikes. When assembling the max, Boeings plant in Renton, Washington, honed the panels on the engines casing for ease of installation. But this inadvertently removes the coating that protects the panel from lightning. The U.S. Federal Aviation Administration is developing a directive requiring Boeing to restore the lightning protection coating on the engine panel, which Boeing is addressing. New problems emerge in an endless stream, bringing multiple challenges to Boeings leadership. The 737max is Boeings most important aircraft, with a global order of about 5000. But as the grounding intensified, Boeing said it would temporarily close its 737 plant, affecting thousands of suppliers. It is reported that Boeing 737max may be allowed to conduct certification test flight at the beginning of this month, which will be the final examination of the regulatory authority on the aircraft, and one of the last obstacles for the regulatory authority to lift the no fly order on the 737max. American and southwest plan to resume commercial flights of the 737max in April, while United plans to resume use of the 737max in June this year. Source: editor in charge of peoples network: Liu Yuxin, nbjs7825

New problems emerge in an endless stream, bringing multiple challenges to Boeings leadership. The 737max is Boeings most important aircraft, with a global order of about 5000. But as the grounding intensified, Boeing said it would temporarily close its 737 plant, affecting thousands of suppliers. It is reported that Boeing 737max may be allowed to conduct certification test flight at the beginning of this month, which will be the final examination of the regulatory authority on the aircraft, and one of the last obstacles for the regulatory authority to lift the no fly order on the 737max. American and southwest plan to resume commercial flights of the 737max in April, while United plans to resume use of the 737max in June this year.