170 I'd like to see a photo of your writing on the window whilst in flight. I fly a Longranger and it's quite a reach to the front window with my hand. I prefer a knee board but I normally just remember anything like clearance etc.
I will try and write with my finger on the window on my next flight but I don't think I can reach. Please post a photo in flight if you can, it will be interesting
Cheers