Guys the reason Lockheed didn't provide the SDK for 3ds Max 2016 is because the 3ds maxe's (2015 & 2016) share the same binary plugin source.
So to use the Lochkeed's SDK for 3ds max 2016 just use the one provided for 2015. http://help.autodesk.com/view/3DSMAX/2016/ENU/?guid=__files_GUID_6E179A56_5552_4D0B_BA61_BBD37B9E52DB_htm
P.S. nice plane, don't be afraid to add more polygons 🙂