This model originated from FlightGear.
Was modified with Linux logo.
A known problem is that the right rudder (inward) isn't quite aligned.

Correct material colors for CanvasSeal:
  Group {
    DataVariance STATIC
    name "CanvasSeal"
...
        Material {
          UniqueID Material_54
          DataVariance STATIC
          name "canvas"
          ColorMode DIFFUSE
          ambientColor 1 1 1 1
          diffuseColor 1 1 1 1
          specularColor 1 1 1 1
          emissionColor 1 1 1 1
          shininess 1
        }
...
