Originally Posted by
VH DSJ
From what I've seen of the flight control schematics diagram on the MFD, a right control yoke deflection gave an indication of the right wing's roll spoilers deflected up and aileron deflected down. Shouldn't this raise alarm bells to the crew when doing a check of the flight controls before take-off? The fact that the flight control MFD indication was shown in 'green' also contributed to 'confirmation bias' that all was well with the flight controls. Perhaps Embraer should look at the colour schematics of the flight control checks where an obvious discrepancy between control yoke deflection and aileron control surface deflection should result in a caution or warning colour (eg, amber or red) rather than green?
Is it known that the schematics were unaffected by whatever misalignment of cabling caused the underlying issue? Seems to me that it is POSSIBLE that whatever reversal of logic was built in by the maintenance activity might have had an equivalent effect on the display.