Hi,
Pitot tube......
Pitot tube was designed time ago ....
It was not firstly designed for aviation.
And when used in aviation .. his first usage was to give at the pilot and indication of speed
Today pitot tube is also used to give information to flight computers and this at altitudes not corresponding at the capabilities of the design
So it's not a surprise for everyone that some problems can arise.
Mixing of new and old technology (design) is the safe way to go ????