Features:
Extremely detailed
Avionics include a Garmin GDU 620 Primary Flight Display (facsimile), EI MFP 50 Engine Monitor, S-TEC 55X Autopilot, Garmin g430 GPS (new X-Plane version), Griffin Angle of Attack Indicator
Controllable-Pitch Propeller
Super Hi-Res textures
13 different liveries
3D Cockpit
Plug-in enhanced
Custom sounds
HDR lighting (and non-HDR)
Fully animated
In-cockpit pop-up menu
Rain and Ice textures for windows
http://store.x-plane.org/Ryan-Navion_p_362.html