Again, this is one I've never heard of. Inspired by Peter Turner's commentPeter Turner's comment.
If you had a plane full of people's consent to be baptized if they miraculously survived the flight but they died anyway then water baptism wouldn't be necessary, it would be baptism by desire.
I'd never heard of "baptism by desire". What is it, who believes in it, and how does it relate to "traditional" baptism as far as legitimacy/effectiveness goes? (Is it considered inferior or equivalent to traditional baptism?) I assume that "by desire" means that no ordained minister/priest/pastor is involved, hence the question of legitimacy/effectiveness.