Celebrating LEAP year! LEAP Year may come around every four years, but advanced technology like the LEAP engine only comes around once in a generation! Tags 737 737 MAX Airbus Airbus A320 Airbus A320neo Allen Paxson Boeing Boeing 737 Boeing 737MAX C919 COMAC COMAC C919 François Bastin LEAP LEAP-1A LEAP-1B LEAP-1C Read more about Celebrating LEAP year!