Can anyone help????

Why, with some aircraft, is it that when you look back (from the cockpit and/or
virtual cockpit) you can see the wings of the aircraft yet with others you
can't?

I know you sometimes have to move the viewpoint to behind the cockpit 'cell'
but evenso, with some aircraft you just cannot 'see yourself'?

Does anyone know how I can make it so that (after I have moved the view point)
I can see the wings etc of my aircraft? The specific aircraft I have in mind is
the Monarch Airlines Airbus A300-600R.

Any help would be greatfully appreciated.

Gareth Kennedy.