Ethiopian report says faulty sensor data led to jet crash
FILE In this Wednesday March 13, Canada Goose Online 2019 file photo, a grieving relative who lost his wife in the plane crash is helped by a member of security forces and others near Bishoftu, in Ethiopia, at the scene where the Ethiopian Airlines jet crashed just after taking off from Addis Ababa on March 10, killing all 157 on board. A preliminary report finds that the crew of the Ethiopian Airlines jet that crashed last month performed all the procedures recommended by Boeing but could not control the plane. (AP Photo/Mulugeta Ayene, File)
FILE In canada goose outlet jackets this Wednesday March canada goose outlet store uk 13, 2019 file photo, a grieving canada goose outlet shop relative who lost his wife in the plane crash is helped by a member of security canada goose outlet forces and others near Bishoftu, in Ethiopia, at the scene where the Ethiopian Airlines jet crashed just after taking off from Addis Ababa on March 10, killing all 157 on board. A preliminary report finds that the crew of the Ethiopian Airlines jet that crashed last month performed all the canada goose coats procedures recommended by Boeing but could not control the plane. (AP Photo/Mulugeta Ayene, File)
ADDIS ABABA, Ethiopia (AP) A doomed Ethiopian Airlines jet suffered from faulty readings canada goose outlet parka by a key sensor, and pilots followed Boeing’s recommended procedures when the plane started canada goose outlet store to nose dive but could not avoid crashing, according to a preliminary report released Thursday by the Canada Goose Parka Ethiopian government.
The findings, including the faulty sensor data, drew the strongest link yet between the March 10 crash in Ethiopia and an October crash off the coast of Indonesia, which both involved Boeing 737 Max 8 jetliners. All 346 canada goose black friday sale people on the two planes were killed.
Both planes had an automated system that pushed the nose down when sensors readings detected the danger goose outlet canada of an aerodynamic stall, but it now appears that sensors malfunctioned on both planes.
Thursday’s report, based on flight data and cockpit voice recorders on the Ethiopian Airlines jetliner, showed that a faulty sensor on the plane touched off a series of events that caused the pilots to lose control of the plane. The report from Ethiopia’s Aircraft Accident Investigation Bureau said the sensor problems began about a minute after the plane was cleared for takeoff.
It said air speed and altitude values on the left side of the 737 Max conflicted with data from the right sensor, canada goose outlet causing flight control problems. Eventually the Ethiopian Airlines pilots couldn’t keep canada goose outlet online uk the plane from crashing into the ground, killing all 157 people onboard.
The problems are similar to those reported on the Indonesian Lion Air flight that crashed last October. Investigators found that software on that plane took readings from the sensor and pointed canada goose outlet the nose down. regulators that pilots could regain control in some emergencies by following steps that include turning off an anti stall system designed specifically for the Max, known by its acronym, MCAS.
Investigators are looking into the role of MCAS, which under some circumstances can automatically lower the plane’s nose to prevent an aerodynamic stall. Federal Aviation Administration and other regulators.
In a statement, Boeing acknowledged the faulty data from the sensor activated the MCAS Canada Goose Jackets system, which was similar to circumstances in the Lion buy canada goose jacket Air crash.
The company said that to make sure unintended activation of the system doesn’t happen again, Boeing is developing software and “associated comprehensive pilot training” for the Max.
The software canada goose outlet uk update, Boeing said in the statement, adds layers of protection and will stop erroneous data from activating the system.
Ethiopian investigators did not specifically mention the MCAS, but recommended that Boeing review “the aircraft flight control system related to the flight controllability.” They also recommended that aviation officials verify that issues have been adequately addressed before allowing the planes to fly again.
Wreckage is piled at the crash scene, March 11, 2019. (AP Photo/Mulugeta Ayene, File)
At a news conference, Minister of Transport Dagmawit Moges said the Ethiopian Airlines crew “performed all the procedures repeatedly provided by the manufacturer but was canada goose outlet online not able to Canada Goose online control the aircraft.”
However, it wasn’t clear whether the Ethiopian pilots followed Boeing’s recommendations to the letter in dealing with the system repeatedly pointing the nose down.
The pilots initially followed Boeing’s emergency steps by disconnecting the MCAS system, but for an unknown reason, they turned the system back on, an official familiar with the crash investigation told The Associated Press on Wednesday. The official spoke on condition of anonymity because at the time, Ethiopian investigators had not released their preliminary report. Boeing’s procedures instruct pilots to leave the MCAS system disconnected and continue flying manually for the rest of the flight.
Ethiopian investigators did not address that issue at the news conference, saying only that the pilots had done what they were supposed to.
However, Moges told The https://www.fcvfrankfurt.de New York Times after the press conference that the pilots turned MCAS on and off, but she couldn’t say how many times. That will be canada goose outlet toronto factory addressed in the final report, she said. Canada Goose sale Justice Department, the Transportation Department’s inspector general, and congressional committees. The agency was also reluctant to ground the planes after the Ethiopian Airlines crash and was among the last agencies to do so.
The FAA, which must certify the 737 Max is safe before it can go back into the air, said in a statement that the investigation is still in its early stages.
“As we learn more about the accident and findings become available, we will take appropriate action,” the agency said.
The statement did not say if the FAA would review the Max’s flight control system as recommended by Ethiopian investigators, and FAA spokesman Greg Martin would not comment beyond the statement. Boeing is working on improvements to the MCAS software that would make it less aggressive in pointing the nose down and easier for pilots to disable. The FAA has said it will review the software before allowing the Max to fly again.