[JoeCortopassi]

planes/helicopters have a fuel source that is orders of magnitude less volatile, and are also able to safely land without power

[philwelch]

What fuels do you mean in particular? If you’re talking about hypergolic propellants, those aren’t commonly used as a main propellant on manned rockets. Most planes and helicopters use kerosene, which is also the primary fuel used by the launch stages of manned rockets.