PARIS, (Reuters) – Airbus shipped at least 605 planes in 2021. The final tally may rise to 611 depending on how the audit turns out. Sources within the industry said Friday.

Reuters earlier reported this week that Airbus beat its 600-delivery target for the full year, thereby maintaining a clear lead over U.S. competitor Boeing (NYSE:). Deliveries are key for generating cash in the midst of the pandemic.

Airbus will provide an update about orders and delivery after Monday’s close, while Boeing discloses data Tuesday.

The European company did not respond to our request for comment.

These workarounds allow carriers to defer accounting for new planes in their balance sheets. Deliveries are partially protected during crisis, Reuters reports. But such arrangements must be reviewed and approved by auditors.

Airbus believes it can beat its 2021 target of up to 11 units. The aviation industry is trying to mobilize an already weak supply chain and has turned their attention to 2022 deliveries and narrowbody production.

According to industry sources, shipping delays or shortages of chip supplies are creating pressure on seats and galleys. Meanwhile, some aircraft due for delivery by 2022 were delayed a few month. Sources indicated that there was a chance of airplanes being delayed to 2023.

Analysts said that although Airbus did not provide a 2022 delivery forecast, it was expected to be significantly higher than 2021.

Airbus in October increased the production targets for its A320-family narrowbody family to 65 units per month by summer 2023. Airbus has clashed with French engine manufacturers. Safran (PA) over its ambitious plans to drive production later as high at 75 per month.

Airbus stated in May that it would call on its suppliers to obtain a fixed rate of 64 per month for the second quarter 2023. This is a change from the 45-percent rate targeted for fourth-quarter 2021.