General > General Technical Chat

Another deadly 737 Max control bug just found!

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GeorgeOfTheJungle:
Dozens of seconds is an eternity to boot an RTOS. Or is it a Linux?

ptricks:
Too bad they can't add a toggle switch in the cockpit to cut power from the pin on the micro that controls the specific part the computer is trying to control , something like a auto/manual option.
I'm sure it is more complicated than that, but something along the lines of how a car cruise control disengages with the brake pedal.

EEVblog:

--- Quote from: ptricks on June 27, 2019, 12:55:58 pm ---Too bad they can't add a toggle switch in the cockpit to cut power from the pin on the micro that controls the specific part the computer is trying to control , something like a auto/manual option.

--- End quote ---

It did/does actually have a switch that disables MCAS, and it could have saved those flights if they had been trained to use it.

GeorgeOfTheJungle:
Yes they can, just have to 1) have RTFM well and thoroughly and 2) put the flaps into position 1...

ptricks:

--- Quote from: GeorgeOfTheJungle on June 27, 2019, 12:54:28 pm ---Dozens of seconds is an eternity to boot an RTOS. Or is it a Linux?

--- End quote ---

It isn't just one OS, they use modular systems so you could have multiple different processor architectures all running their own firmware or OS, so you could restart systems without restarting the entire avionics system.

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