[dingaling]

> There's already two AoA vanes mandatory on every plane

And all Airbus types have three or four. Boeings only have two, even on the 787 ( on which one is vulnerable to damage from jetbridges ).

It is disappointing that a manufacturer would cut corners on sensors for a $100 million aircraft.

[WalterBright]

Airbus needs more because there's no mechanical backup to the flight control computers.