@ captplaystation
I really don't think so, since the bond is exactly what it is - money you guarantee or get back. If you pay in EUR 30,000 you will get EUR 10,000 back each year for three years. A much better deal than many other airlines where you gave to pay your bond (and sometimes not even guaranteed a job). After three years you are free to move on somewhere else if you like, and no money has to be paid. If you leave earlier, yes the bond covers a small portion of the training costs.
I think the Norwegian recruitment team are looking for future colleagues, that fit into the pilot group and work well together and that can pass the quite compressed training (if you have previous Boeing experience). Norwegian is not involved with the bond.