The Unexpected mistake made by EPA

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News Update | The Unexpected mistake made by Ethiopian Press Agency (EPA)

As a result, additional flight deck effects (such as IAS DISAGREE and ALT DISAGREE alerts and stick shaker activation) resulting from the same underlying failure (for example, erroneous AOA) were not simulated and were not documented in the stabilizer trim and auto flight safety assessment,” they write.

Ethiopian investigators suggested the design of MCAS should include redundancies in the use of data “from both AOA and/or other independent systems.”

They also recommended that regulators certifying the aircraft should “confirm all probable causes of failure have been considered during functional hazard assessment.”

Additionally, Ethiopian investigators found that the difference training from B737NG to B737 MAX provided by Boeing to the airline’s pilots was “inadequate.”

 

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