European planemaker Airbus stuck to its full-year financial targets after reporting slightly higher-than-expected core first-quarter profits.

But the higher profits were overshadowed by a heavy drain on cash as the company stocked parts to ease industrial bottlenecks. 

Airbus said its quarterly revenues rose 24% from a year ago to €12.55 billion, while adjusted operating profit jumped to €549m from €14m last year, driven by higher commercial jet deliveries. 

A Reuters poll had given a mean forecast for revenues of €12.99 billion and an adjusted operating profit of €520m. 

Higher deliveries of A320neo jets, which sell at a premium to earlier models, and progress in reducing costs on the larger A350 contributed to the sharp rise in profits. 

But Airbus still faces snags in producing a longer-range A321 with new cabins. 

"Airbus is working to improve execution in its internal industrial systems and monitoring engine performance," it said in a statement. Engine delays have also weighed on deliveries. 

Excluding adjustments, earnings fell 9% partly as a result of a row over Germany's suspension of export licences to Saudi Arabia and costs for the A380 superjumbo, which Airbus has said it plans to shut down in 2021 due to poor sales. 

Airbus suffered a cash outflow of €4.3 billion in the quarter as it built inventories but the company is expected to see that reverse course later in the year. 

It reaffirmed 2019 targets including positive free cashflow of €4 billion and a 15% rise in operating profit.

Last week, Airbus' rival Boeing abandoned its 2019 financial outlook, halted share buybacks and said that lowered production due to the grounding of its 737 MAX jet after two crashes had cost it at least $1 billion so far.