Certain Apple MacBook Pro devices are not allowed on Finnair flights due to battery issues
The European Aviation Safety Agency EASA and the US Federal Aviation Administration have issued instructions regarding the 15-inch MacBook Pro units manufactured between Sept 2015 and Feb 2017.
15-inch MacBook Pro units manufactured between Sept 2015 and Feb 2017 are subject to the recall by Apple on June 20, 2019, due to battery issues.
Such devices are not allowed in checked-in baggage or onboard on Finnair flights before their batteries have been replaced. Customers are responsible for ensuring the status of their device before their flight via Apple webpages at https://support.apple.com/15-inch-macbook-pro-battery-recall