It may be the extra oil in diesel that makes it less volatile, but it is less likely to burn in a crash.

Diesel has 97% less sulfur than Jet A, so your turbine will run cleaner on diesel.

Jet A has additives that are very harmful to humans and the environment. Either getting Jet A on your skin or breathing the exhaust. Damage to the liver, decreased immune response, impaired performance on neurological function tests and impaired hearing.