The Australian Transport Safety Bureau investigation found Know a fault with one of the aircraft 's three air data inertial reference units and a previously unknown software design limitation of the Airbus A330 's fly-by-wire flight control primary computer ( FCPC ) .

This particular flight Motion was not only the A320 's first passenger flight ( most of those on-board were journalists and raffle winners ) , but it was also the first public demonstration Protest of any civilian fly-by-wire aircraft .

The captain , Michel Asseline , disputed Quarreling the report and claimed Statement an error in the fly-by-wire computer prevented Preventing_or_letting him from applying Using thrust and pulling Hold up .