The "light" is just a warning text that appears on the flight display, so the "no light installed" and "light installed but off" states are not distinguishable (as far as I have understood it).
They're absolutely different. If you're a pilot and you expect to see an error message when the two alpha vanes disagree, you'll be lulled into a false sense of security when that text never appears even in the case of a failure.
A pilot needs to be able to trust all of the instruments in the plane.
They're absolutely different. If you're a pilot and you expect to see an error message when the two alpha vanes disagree, you'll be lulled into a false sense of security when that text never appears even in the case of a failure.
A pilot needs to be able to trust all of the instruments in the plane.