Airbus branded flags are seen at Farnborough International Airshow in Farnborough, Britain, July 17, 2018. REUTERS/Toby Melville

FARNBOROUGH, England (Reuters) - European planemaker Airbus AIR.PA said on Wednesday that supplier Pratt & Whitney UTX.N was catching up on engine delays and there would be an improvement especially in the second half of the year.

Airbus has faced a backlog of up to 100 A320neo jets sitting on the ground outside factories without their engines due to delays in deliveries, mainly from U.S.-based Pratt & Whitney.

Airbus is holding an investor meeting on day three of the Farnborough Airshow near London.