- There have been more than 12,000 orders for the Airbus A320 family
- The plane is the single-aisle rival to Boeing's 737
- A320 is "safer than most aircraft out there now," says aviation expert
This story was first published in March 2015 and has been updated with new information.
(CNN)The A320 has for several decades been a key component in the rivalry between manufacturers Airbus and Boeing.