Assertion: airbus's aircraft | /r/CapableOf | remain with 827 units
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text: The most popular aircraft in the inventory remains the Boeing 737-800 with 827 units (794 in 2017) ahead of the Boeing 737-700 (586 units vs. 585 in 2017), and the Airbus A320ceo (521 units vs. 505 in 2017).