The Airbus 320 plane that went down in the French Alps is a workhorse of modern aviation. Similar to the Boeing 737, the single-aisle, twin-engine jet is used to connect cities that are between one and five hours apart. Worldwide, 3,606 A320s are in operation, according to Airbus, which also makes the smaller but near-identical A318 and A319 and the stretched A321. An additional 2,486 of those jets are flying.
The Germanwings A320 crashed Tuesday crashed in the south of the Alps while flying from Barcelona to Duesseldorf in Germany. No survivors are expected.
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