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NTSB, Ethiopian Investigators Clash Over 737 Max Accident Report

The accident investigation agencies disagree about what factors led to the 2019 crash of Ethiopian Airlines flight 302.

The NTSB is clashing with its Ethiopian counterpart over the agency's report on the cause of the crash of Ethiopian Airlines flight 302 on March 10, 2019. [Courtesy: Boeing]
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Key Takeaways:

  • The NTSB disputes the Ethiopian aviation investigators' conclusion on the Ethiopian Airlines Flight 302 crash, stating their findings are "unsupported by evidence."
  • While Ethiopian investigators blamed an electrical problem leading to a faulty Angle of Attack (AOA) sensor and MCAS malfunction, the NTSB found no evidence for this.
  • The NTSB proposes that the faulty AOA reading was likely caused by the sensor vane separating due to impact with a foreign object, most probably a bird.
  • The NTSB also criticized the Ethiopian bureau for failing to follow international review protocols and not incorporating NTSB evidence into its final report.
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Ethiopian aviation accident investigators’ findings behind the cause of the crash of Ethiopian Airlines flight 302 on March 10, 2019 are “unsupported by evidence,” according to a new report issued Tuesday by the National Transportation Safety Board (NTSB).

Flight 302, a Boeing 737 Max 8, crashed shortly after takeoff, killing all 157 people on board. 

Meg Godlewski

Meg Godlewski has been an aviation journalist for more than 24 years and a CFI for more than 20 years. If she is not flying or teaching aviation, she is writing about it. Meg is a founding member of the Pilot Proficiency Center at EAA AirVenture and excels at the application of simulation technology to flatten the learning curve. Follow Meg on Twitter @2Lewski.

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