I
only have Full Airframe Auth/Approval and can run the Engines on low power upto Min/Flt Idle, and not Taxi the A/C. A person with Full engine licence/approval can run at max power
and Taxi the A/C, once checked out by the Base training captain and approved by QM.
You have to have a min two qualified personnal on the flt deck to do this.
I don't believe un-licenced personnel can Run engines, although they can operate the APU.
This is of course all in the ideal world (
).