Question

why are fountain pens not allowed in aeroplane​

Answer 1

Answer:

As you know with increasing attitude Atmospheric pressure decreases , so the pressure inside the pen is more compared to the its surrounding Are (i.e inside the Flight). When we are using the pen , the ink gets spilled due to varying pressure. Hence the caution

Answer 2

Explanation:

As you know with increasing attitude Atmospheric pressure decreases , so the pressure inside the pen is more compared to the its surrounding Are (i.e inside the Flight). When we are using the pen , the ink gets spilled due to varying pressure. Hence the caution.