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by inferiorhuman 2348 days ago
I always wondered if they did that, something akin to fuzzing tests in SW.

Well Boeing certainly doesn't fuzz their software as evidenced by the major bugs in the 737 NG and 747-400's flight displays. Both had bugs that would black out all instruments under specific conditions. That got fixed fairly quickly on the 747, but apparently Boeing didn't learn their lesson with the NG.
1 comments
jaywalk 2348 days ago
The bug didn't black out all instruments, it blacked out the multi-function displays. Certainly less than ideal, but that's precisely why backup instruments exists.
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inferiorhuman 2348 days ago
The bug didn't black out all instruments, it blacked out the multi-function displays. Certainly less than ideal, but that's precisely why backup instruments exists.

The bug blacked out all six display units. What other instruments are you thinking of?

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jaywalk 2346 days ago
All critical instruments have analog backups. Altitude, speed, artificial horizon, etc.
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