Comments in the advert in flight international :
"Successful candidates on the ATR Fleet may expect promotion to Jet Fleets subject to suitability, overall performance and availability of jet positions"
The last ATR captain promoted to Jet Fleet ( promoted as A319 F/O , with the same basic salary

) stayed four years on ATR fleet ! The next one if he is a " good boy " will stay four years as well .
Make your choice !