WASHINGTON (Reuters) - Airbus CEO Guillaume Faury said on Tuesday that engines remain the most challenging part of the aerospace supply chain, as the European planemaker seeks to grow jet deliveries.

Faury told a gathering of aerospace executives in Washington, D.C., that he is "worried" about engines, despite seeing improvements within the aerospace supply chain.

Airbus is aiming for a 7% increase in deliveries to 820 jets this year, but is wrestling with delays in receiving engines and cabin equipment. 

(Allison Lampert and Doyinsola Oladipo in Washington; Editing by Mark Porter)