Altimeter

Question 1

Due to changes or differences in the actual atmosphere and the ISA what things can lead to errors in the Altimeter indication

Answer 1

Low pressure systems
Temperature variations
Mountain effect and waves
Abnormally, high pressure

Question 2

What is barometric pressure?
(Air pressure)

Answer 2

Weight of the overlaying air pressing down on the earth

Question 3

Low barometric pressure =

Answer 3

Overlaying air is rising
Lower than 29.92 (as low as 27.30)

Question 4

High barometric pressure =

Answer 4

Overlaying air is sinking.
Above 29.92 on barometric scale (as high as30.7)