I received this PM from Mr Phelan:
If you're sitting in the RH front seat an R44 and you're average height, the windscreen pillar isn't straight ahead of you; it's off to your left and where the pillar intersects the horizon it's probably sloping back about 20-30 degrees. Try sitting in your car and looking across to where the LH windscreen intersects the horizon. Depends on the slope of the windscreen, yet to listen to all the helo pilot "expert witnesses" it seems they think it's at right angles to the horizon. How the hell can anybody sit in a Bell for 12,000 hours and still think the windscreen is vertical? This may explain why they're still helo pilots.