my three year old daughter has .1 on her logbook
Taxied round to the run-ups at YSCN a few weeks ago , she pressed the starter (on dads thumb), seemed totally comfortable with the racket (no headset), held my hand on the throttle, asked what the rpm guage did, asked whats the VSI gauage, asked whats the throttle, and finally pulled the mixture (with help) when we stopped.
is that too many smiley faces ?
I thought hobbs was it, unless you have an airswitch when you add .25 (nn) estimated taxi time as per the FBO's instructions.
I can't remember what the exact airswitch method is , been all hobbs for as long as I can remember.