Originally Posted by
Concours77
A great deal of discussion in the archives of AF447 exists on this very thing. Although the 777 and A330 are both heavy twins, trying to compare the two (computerized) approaches to UAS is problematic, due to fundamental design discrepancies?
Has a 777 ever reacted (automatically) to UAS by altering (degrading) flight control to a separate flight control system? Climbed rapidly absent pilot input? Trimmed automatically into the STALL?
There was an event reported years ago on a b777 which abruptly intiated a massive climb by 4000-5000 ft in cruise as a result of a false ADIRU acceleration sensed by A/P. What I remember reading is the SAARU added an opposite effect to the whole climb event (not sensing 'rightfully' any acceleration) thereby restricting/limiting the event to just 4-5K altitude gain. So this was not technically a UAS, but False acceleration & input by ADIRU. google can help if you want to read on that
