4 ms·
Not really no. Lion Air 610, and the 23 other near miss incident reports all point to a fundamental design flaw in the Boeing 737 Max8 Primarily, that there is
by Prickle 3y ago
Not really no. Lion Air 610, and the 23 other near miss incident reports all point to a fundamental design flaw in the Boeing 737 Max8
Primarily, that there is only one angle of attack sensor that feeds the MCAS system.
There are two sensors, but the system just doesn't compare them. It just takes the result from one sensor and uses it regardless of errors.
For comparison, Airbus A320 actually has a very similar system. But it is fed by 3 different angle of attack sensors. All 3 sensors are constantly compared against each other.
I almost forgot! Below quotes are straight from Wikipedia MCAS page.
> Boeing's own internal design guidelines related to the 737 MAX's development stated that the system should "not have any objectionable interaction with the piloting of the airplane" and "not interfere with dive recovery".[68] The operation of MCAS violated those.[69]
> the specific failure modes that could lead to unintended MCAS activation (such as an erroneous high AOA input to the MCAS) were not simulated as part of these functional hazard assessment validation tests. 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 in the stabilizer trim safety assessment report reviewed by the NTSB."