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CaptainTruth

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4. Yes there are inherent flaws with the MCAS software, & there were bad sensors.

Fri Mar 29, 2019, 10:42 AM

Mar 2019

Problem is the software was written to only check 1 AoA sensor (the plane has 2). In those crashes that 1 sensor was bad, in one case reading 20 degrees different from the other sensor while the plane was taxiing for takeoff (black box data). The software didn't even check both sensors before takeoff to make sure they agreed with each other. The 747 has 3, software checks them all to make sure they agree within a certain tolerance. If one is reading out of range it's disregarded. Boeing deliberately decided to NOT do that on the Max 8.

From what I've seen the problems with the Max 8 can be fixed if they change the flight control software to work more like it does on their older planes. Of course, if the AoA sensor is a new design, that should be examined too.

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Investigators 'believe Ethiopian 737 Max's anti-stall system activated' [View all] brooklynite Mar 2019 OP

Looks like there are inherent flaws in the design of the 737 MAX democratisphere Mar 2019 #1

Exactly, watoos Mar 2019 #2

Unstable flight characteristics due to power and cg changes with the jet engines. CentralMass Mar 2019 #3

Right. It is an engine and aircraft compatibility problem that democratisphere Mar 2019 #6

All aircraft have instability characteristics Major Nikon Mar 2019 #9

My uneducated opinion is that they modified an old stable 737NG CentralMass Mar 2019 #11

The original 737 design dates back to the 60's Major Nikon Mar 2019 #12

Yes there are inherent flaws with the MCAS software, & there were bad sensors. CaptainTruth Mar 2019 #4

The other problem was pilots weren't trained on how to turn the system off if it malfunctions Major Nikon Mar 2019 #7

I heard two Americans pilots relate how they had to override and correct efhmc Mar 2019 #8

If it's the software that caused the issue, then it can be fixed with a modification to the software Major Nikon Mar 2019 #5

Ethiopian Airlines sending black box to France for analysis Sneederbunk Mar 2019 #10

Maybe so, but the BEA is a very good agency jmowreader Mar 2019 #13

Message auto-removed Name removed Mar 2019 #14