Hello folks, you must try the
steve foster ATR page.
A very insightful set of notes on the ATR 42 systems with differences between the 72.
Here is the
link: ATR Training Resources - Steve Foster
A quizz on systems is available and tips for your initial sim.
A must read for line pilots as well as those new to the airplane.
The ATR ACOS (CBT) is closely guarded product and is impossible to crack off the flash drives.A single copy of the ACOS is provided ATR to operators/clients for training.
Good luck finding a copy.
Cheers.