"The company produces and markets the first commercially viable digital FLY-BY-WIRE airliner, the Airbus A320…"
A321 is an A320-series.
"The company produces and markets the first commercially viable digital FLY-BY-WIRE airliner, the Airbus A320…"
A321 is an A320-series.
What's unique then about the Airbus A320s system?