simBrief default AIRAC is now AIRAC 1903 as of 02/28/2020 - updated from 1803. The on-site Navdata will be updated to match the current default simBrief AIRAC cycle in the coming days. EDIT: On site Navdata updated to AIRAC 1904 on 04/15/2020.
There is now an ATR42-500 (AT45) aircraft available on the simBrief Flight Briefing Form. This was added as a custom airframe We have also set up a custom airframe profile for the ATR 45 at the simBrief site: ATR 42 Airframe Profile .