Flyman, Thank you for reminding me one of my momories.
That momory made me have a habit of checking one more time the thrust levers are in idle just before starting engines.
Penco, you are right.
We have CFM engines and FCOM 3 says as below
"BEFORE PUSHBACK AND START"
THRUST LEVERS-------IDLE
Caution
Engine will start, regardless of the thrust position; thrust will rapidly increase to the corresponding trust position, causing a hazardous situation, if thrust levers are not in IDLE position
I assume this means A320 can run into a towing truck if thrust levers are not in idle which happened in my previous company about 15 years ago, of course it was MD 82 not A320. What made this incident worse was the captain wasn't agree the thrust levers were not in idle 
and it took sim check to make him agree that the thrust levers were not in idle, this made him resign. Also this is why I check one more time the thrust levers are in idle.
Penco, I have a A320 sim check few day later, and I will let you know the result if I manage to ask my instructor to try this, but I am not sure about if I can do it,
because 4 hrs are normally too short to do what we suppose to do in sim.
CBS
Last edited by cross bleed start; 28th Apr 2009 at 14:50.