Made with Blender 2.71, rendered in Blender Internal. Some textures made with GIMP.
The motion blur was a combination of GIMP and Blender, and all assembled in GIMP. Here's the thread if anyone has any interest on how it was done:
http://blenderartists.org/forum/showthread.php?347180-RC-Helicopter
This is also my very first feature at Blender Artists, so MANY thanks go out to everyone who decided to feature this, and who followed the making-of in my sketchbook, offering help along the way! :)