Fly Lah!

Hi! I would appreciate it very much if someone can help me answer some questions bout the instruments paper for ATPL. Starting with Mach meter, why isn't Machmeter subjected to temperature and density error?

Machmeter is measuring Dynamic pressure/static pressure

Mn=D/S

Let's not get too technical.
Both the pressure source will be affected by temp error, and density error. Thus the error cancel off.

Cheerio
StevieRay