This entire project is profoundly dishonest.
Hydrogen does not occur in nature; hydrogen COMPOUNDS occur in nature. Energy must be expended to crack those compounds.
As usual, the question remains: what source of energy is used to crack out the hydrogen? Solar? Wind? You’re kidding, right?
They’re not making a hydrogen powered airplane, they’re making a coal/methane/nuclear powered airplane.
If the just added a few carbon atoms to that hydrogen...................