A year after you are hired, you bid the jet on the next vacancy bid you get it. The inly way that you wouldn't be able to get out of the ATR after the first year is if we have stagnation, and if this is the case you will find your self out of a job, at the button of the RSV list on the ERJ, or stuck on the ATR. In reality there is now way you would just get stuck because you can't transfer. It would have to be a drastic change for you not to be able to transfer. Airline shrinking and keeping the ATR, another 9/11 or 2008 stock market crash (you get the idea, something that will suck for everyone) People who get the ATR in the next few classes will see a better QOL than on the ERJ, something happened last year when guys came of their seat locks. Right now over half of the ATR FO have completed, by February over 75% of the current FO will be able to transfer and most will. Choice is yours, but being stuck is highly unlikely.