The 412 has undergone some massive work and it's now one of the most complete helicopters for FlightGear. Here's the full changelog:
This is a the first release of an all new stand along Bell 412. previously it was included in the "Huey" package (and the old version still is). It is a very different release from the previous one.
ALS Fuselage and Glass rain and reflection effects. Fuselage reflection is livery dependant.
All new cockpit main panel, centre console and overhead panel.
All new FDM - includes stiction patch for future FlightGear 2019+ versions.
11 new liveries included, specific to this 412.
5 mission configuration options.
ALS Rotor wash on Grass effect.
Multiplayer viewable rotor dust effect.
Multiplayer passengers possible.