Chapter 3: Flight Instruments

Question 1

Which instrument will become inoperative if the pitot tube becomes clogged?

Answer 1

Airspeed.

Question 2

Which instrument(s) will become inoperative if the static vents become clogged?

Answer 2

Airspeed, altimeter, and vertical speed.

Question 3

If an altimeter setting is not available before flight, to which altitude should the pilot adjust the altimeter?

Answer 3

The elevation of the departure area.

Question 4

Prior to takeoff, the altimeter should be set to which altitude or altimeter setting?

Answer 4

The current local altimeter setting, if available, or the departure airport.

Question 5

At what altitude shall the altimeter be set to 29.92, when climbing to cruising level?

Answer 5

18,000 feet MSL.

Question 6

Altimeter setting is the value to which the barometric pressure scale of the altimeter is set so the altimeter indicates

Answer 6

true altitude at field elevation.

Question 7

How do variations in temperature affect the altimeter?

Answer 7

Pressure levels are raised on warm days and the indicated altitude is lower than true altitude.

Question 8

What is true altitude?

Answer 8

The vertical distance of the aircraft above sea level.

Question 9

Under what condition will true altitude be lower than indicated altitude?

Answer 9

In colder than standard air temperature.

Question 10

What is absolute altitude?

Answer 10

The vertical distance of the aircraft above the surface.

Question 11

What is density altitude?

Answer 11

The pressure altitude corrected for nonstandard temperature.

Question 12

What is pressure altitude?

Answer 12

The altitude indicated when the barometric pressure scale is set to 29.92.

Question 13

Under what condition is indicated altitude the same as true altitude?

Answer 13

When at sea level under standard conditions.

Question 14

If it is necessary to set the altimeter from 29.15 to 29.85, which change occurs?

Answer 14

700 foot increase in indicated altitude.

Question 15

Under which condition will pressure altitude be equal to true altitude?

Answer 15

When standard atmospheric conditions exist.

Question 16

Under what condition is pressure altitude and density altitude the same value?

Answer 16

At standard temperature.

Question 17

If a flight is made from an area of low pressure into an area of high pressure without the altimeter setting being adjusted, the altimeter will indicate

Answer 17

lower then the actual altitude above sea level.

Question 18

If a flight is made from an area of high pressure into an area of lower pressure without the altimeter setting being adjusted, the altimeter will indicate

Answer 18

higher than the actual altitude above sea level.

Question 19

Which condition would cause the altimeter to indicate a lower altitude than true altitude?

Answer 19

Air temperature warmer than standard.

Question 20

If a pilot changes the altimeter setting from 30.11 to 29.96, what is the approimate change in indication?

Answer 20

Altimeter will indicate 150 feet lower.

Question 21

Deviation error of the magnetic compass is caused by

Answer 21

certain metals and electrical systems within the aircraft.

Question 22

In the Northern Hemisphere, a magnetic compass will normally indicate a turn toward the north if

Answer 22

an aircraft is accelerated while on an east or west heading.

Question 23

In the Northern Hemisphere, the magnetic compass will normally indicate a turn toward the south when

Answer 23

the aircraft is decelerated while on a west heading.

Question 24

What should be the indication on the magnetic compass as you roll into a standard rate turn to the right from a south heading in the Northern Hemisphere?

Answer 24

The compass will indicate a turn to the right, but at a faster rate than is actually occurring.

Question 25

In the Northern Hemisphere, if an aircraft is accelerated or decelerated, the magnetic compass will normally indicate

Answer 25

correctly when on a north or south heading.

Question 26

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the west if

Answer 26

a right turn is entered from a north heading.

Question 27

In the Northern Hemisphere, a magnetic compass will normally indicate initially a turn toward the east if

Answer 27

a left turn is entered from a north heading.

Question 28

During flight, when are the indications of a magnetic compass accurate?

Answer 28

Only in straight-and-level unaccelerated flight.