Fountain pens in an aircraft?

[fatsportpilot]

Does anyone here who is familiar with fountain pens know if they tend to leak if they're brought up to altitude?

[ShawnM]

Are you practicing your calligraphy skills when the autopilot is on? I keep a pencil in my plane because they always write and never leak.

[Warmi]

I have been using computers for any sort of typing for so long I am afraid I can’t write anymore ... I got to find a pen and give it a try one of these days ...

[3Dreaming]

I have a pilot friend that almost exclusively writes with a fountain pen. I suspect he carries one while flying.

[Scooper]

I use a Fisher Space Pen while flying. It always writes (unless it runs out of ink) and has never leaked.

[drseti]

I use a Fisher Space Pen while flying. It always writes (unless it runs out of ink) and has never leaked.

And my pencil has also never leaked!