Airbus has secured initial approval for the sharklet wing-tip modification on the A319, and intends to deliver the first examples to customers later this year.
The certification from the European Aviation Safety Agency covers the CFM International CFM56-powered version.
Airbus says the approval is an "important step" towards service entry of the type.
It began flying the modified A319 in November last year, shortly before its larger sister, the A320, obtained the first EASA airframe certification for the sharklet programme.
Airbus has been testing MSN5327 fitted with CFM56s and MSN5406 for the International Aero Engines V2500 effort.
It will also make the sharklets a standard fit on the A319neo, ordered by Qatar Airways and Republic Airways, which will be powered by Pratt & Whitney PW1100G or CFM Leap-1A engines.