Altitude (Pressure)

Question 1

Indicated Altitude

Answer 1

What your altimeter reads

Question 2

True Altitude

Answer 2

How high you are in MSL (Sea level)

Question 3

Absolute Altitude

Answer 3

How high you are in AGL (above the actual surface)

Question 4

Pressure Altitude

Answer 4

Barometric pressure scale set to 29.92

Question 5

Density Altitude

Answer 5

Pressure altitude corrected for non-standard temperature

Question 6

When is indicated altitude equal to true altitude?

Answer 6

When you’re parked on the ground with the correct altimeter setting

Question 7

If you fly from high pressure to low pressure without adjusting the barometric settings, what type of error will your altitude indicator have?

Answer 7

Actual altitude will be lower than the indicated altitude

Question 8

When you go from low altitude to high altitude with no setting adjustment, what error will your altimeter be expressing?

Answer 8

Actual altitude will be higher than the indicated altitude

Question 9

How many feet for every 1 inch of mercury?

Answer 9

1000ft for every 1 inch

Question 10

How do you calculate density altitude?

Answer 10

Using a chart

First take your field elevation and correct for non-standard temperature using the chart

Plot your X coordinate by subtracting the pressure altitude by the density altitude the following the slanting line.

Plot your Y coordinate using the temperature

Make a horizontal line at the intersecting point of the X and Y axis. That is your density altitude.