It can’t be used with ProtonVPN (I assume) but I use NoRoot Firewall for exactly this purpose. It works by setting up a VPN and letting you enable / disable network access for each app, including system apps. It can also block on just WiFi or just cell data or both or neither. It blocks all apps by default until you configure their access. You can also setup more advanced rules for all apps or just some apps. For instance, you can set it where an app can contact AppCompany.com but not Google.com

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Safety inspections are also in the customer’s best interest. So is retaining the employees who know how to keep them safe when flying at high speed and well off the ground. If a pay raise is what is required to retain those employees, then it is critical to customer safety. Not having preventable deaths or injuries is very much in the best interest of the company.

If they have been alerted to safety issues and take no action or insubstantial action, that sound like negligence which can be quite costly.

IANAL, YMMV, etc.