Test Assumptions Faulty During 737 Max Design, Says NTSB | Aviation International News

Test Assumptions Faulty During 737 Max Design, Says NTSB

U.S. transportation safety board issues seven recommendations to the Federal Aviation Administration related to the Boeing 737 Max.

By Gregory Polek • Senior Editor

September 26, 2019

The design of the maneuvering characteristics augmentation system (MCAS) in the 737 Max relied on improper assumptions about the ability of pilots to respond to multiple alerts and indications during certain emergency scenarios, the U.S. National Transportation Safety Board (NTSB) said in a report issued Thursday that included seven recommendations to the Federal Aviation Administration (FAA). The NTSB’s report stems from its ongoing support of investigations into last October’s crash of Lion Air Flight 610 into the Java Sea and the crash this past March of Ethiopian Airlines Flight 302 near Ejere, Ethiopia.

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