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The US aviation regulator has alerted airlines to a Boeing warning that the latest version of its proven 737 aircraft has a potential defect. software critical for safety, after an accident in Indonesia last week in which 189 people died.
The Federal Aviation Administration (FAA) announced on Wednesday that it would order all airlines operating the 737 Max to follow Boeing's previous advice to remind pilots how to process information. fake a key sensor, which can confuse the crew who manually pilot the aircraft and cause a sharp drop.
The announcement by the FAA suggests that accident investigators suspect a defect in the software it could help confuse the crew that was piloting the Lion Air aircraft immersed in the Java Sea on October 29, shortly after taking off from Jakarta.
The data that was recovered in one of the black boxes of the aircraft showed that the aircraft had encountered aerodynamic speed problems during its last four flights. The accident was the first to involve the new 737 Max 8 aircraft, the latest version of the aircraft 's best – selling twin – engine aircraft. The device was manufactured this year and delivered mid-August to Lion Air, one of the largest low-cost airlines in the region.
The statement by the FAA, which is the primary regulator of the safety of all commercial aircraft built by Boeing, echoed an earlier warning issued by the American aircraft manufacturer that air accident investigators had discovered that Lion Air flight had "erroneous registration" of one of its "angle attack sensors".
The warning refers to a key sensor that monitors the angle of incidence of an aircraft, an aerodynamic calculation of the angle of the wings compared to the flow of air . The sensor transmits information to cockpit instruments that pilots use to fly the aircraft manually, but also transmits the data directly to the flight computer.
The data allows the autopilot of the aircraft to determine if the aircraft is about to go into stop mode, a critical condition that may result in the complete loss of control of the aircraft. . Under certain circumstances, the autopilot of a 737 Max will crush the pilots who fly the aircraft manually and try to lower the nose if it detects that it is imminent to stop.
The FAA's orderly Boeing warning, known as the "operations manual," reminds pilots that they must comply with the "current procedures for flight crews" designed to cope with circumstances in which the information provided the sensor cabin is incorrect.
The FAA stated that it "would take more appropriate action based on the results of the investigation".
The FAA's actions will of course be followed by all the other safety regulators around the world.
Nick Cunningham, an aerospace analyst at Agency Partners, said that such bulletins were not uncommon, adding that aircraft manufacturers usually sent them to airlines, indicating safety and maintenance measures to take.
IN NUMBERS
219 Max 737 aircraft have been delivered by Boeing since the model debuted with a subsidiary of Lion Air last year.
6.6% drop in shares of the aerospace company after the Jakarta accident, which worked at $ 335.59.
369.48 listing of the company's securities at the end of yesterday on the markets; it has recovered 1% since the announcement of the crash in Asia.
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