C06 - Altimetry

Question 1

What does QFE measure?

Answer 1

Field Elevation.

Question 2

QFE is the ‘____’ pressure at the Aerodrome Reference Point?

Answer 2

Barometric.

Question 3

QFE is the recorded ‘____’ pressure at the Aerodrome?

Answer 3

Surface.

Question 4

What does the Altimeter indicate when a Pilot sets QFE on the subscale (2)?

Answer 4

• 0 ft at the Aerodrome Reference Point.

- Height above the surface.

Question 5

What does QNH measure?

Answer 5

Nautical Height.

Question 6

How is QNH calculated?

Answer 6

Calculated Barometric pressure at Mean Sea Level.

Question 7

QNH is the Aerodrome’s ‘____’?

Answer 7

Mean Sea Level Pressure.

Question 8

What does the Altimeter indicate when a Pilot sets QNH on the subscale (3)?

Answer 8

• 0 ft at Mean Sea Level.
• Altitude above Mean Sea Level.
• Elevation of the Aerodrome.

Question 9

What does QNE measure?

Answer 9

Height when Landing at an Aerodrome when 1013.25 hPa is set on the Altimeter Sub Scale.

Question 10

True or False. QNE is a Pressure Setting?

Answer 10

False. It’s a Height.

Question 11

When will a Pilot use QNE?

Answer 11

At High Elevation Aerodromes.

Question 12

What does Regional QNH measure?

Answer 12

Regional Pressure Setting is the lowest QNH within a specific region.

Question 13

When will Regional Pressure Setting be most likely used?

Answer 13

During Cross-Country flights at relatively low Altitudes.

Question 14

What does SPS stand for?

Answer 14

Standard Pressure Setting.

Question 15

What is the Datum for SPS?

Answer 15

ISA Mean Sea Level Pressure of 1013.25 hPa.

Question 16

When will SPS be used?

Answer 16

An Aircraft that are flying above the Transition Level.

Question 17

What does the Altimeter indicate when a Pilot sets SPS on the subscale?

Answer 17

Pressure Altitude of the Aircraft above 1013.25 hPa.

Question 18

Aircraft which use SPS use what to distinguish their Altitudes?

Answer 18

Flight Levels.

Question 19

What are the dangers of Horizontal Pressure Variation?

Answer 19

Could lead to false Height/Altitude if the Altimeter is not correctly changed to reflect the ambient pressure.

Question 20

Flying from a High Pressure Area to a Low Pressure Area, True Altitude ‘____’ while the Indicated Altitude ‘____’. The Altimeter error will ‘____’ True Altitude (3)?

Answer 20

• Reduces.
• Remains the same.
• Over Read.

Question 21

Flying from a Low Pressure Area to a High Pressure Area, True Altitude ‘____’ while the Indicated Altitude ‘____’. The Altimeter error will ‘____’ True Altitude (3)?

Answer 21

• Increases.
• Remains the same.
• Under Read.

Question 22

High Pressure is where True Altitude is ‘____’ than Indicated Altitude (QNH)?

Answer 22

Greater.

Question 23

Low Pressure is where True Altitude is ‘____’ than Indicated Altitude (QNH)?

Answer 23

Less.

Question 24

What is the common saying, from high to low?

Answer 24

Look down below.

Question 25

Where is setting Aerodrome QNH vital when entering the vicinity of an Aerodrome (2)?

Answer 25

- Ensure the correct Altitude in the vicinity of the Aerodrome. - Ensures all Aircraft are using the same pressure datum to maintain separation.

Question 26

When flying Cross-Country at Low-Altitudes, your Altimeter should be set to what type of pressure settings?

Answer 26

Regional Pressure Settings.

Question 27

Published Height Above Sea Level at which Pilots climbing to their cruising level change their Barometric Altimeter from RPS to International Standard of 1013.25 hPa. What am I?

Answer 27

Transition Altitude.

Question 28

The Lowest available Flight Level. It guarantees minimum vertical separation of 500 ft from an Aircraft flying at the highest assignable Altitude on QNH. What am I?

Answer 28

Transition Level.

Question 29

Above Transition Altitude, the Altimeter should be set to?

Answer 29

Standard Pressure Settings.

Question 30

Below the Transition Altitude, the Altimeter should be set to?

Answer 30

QNH.

Question 31

When should QNH be set when descending from Transition Altitude?

Answer 31

At Transition Level.

Question 32

The Airspace between the Transition Altitude and Transition Level is known as?

Answer 32

Transition Layer.

Question 33

Which layer is higher, the Transition Altitude of Transition Level?

Answer 33

Transition Level.

Question 34

True or False. Temperature of Air affects the Pressure Lapse Rate?

Answer 34

True.

Question 35

In Cool Air, the Pressure ‘____’ more rapidly with Height?

Answer 35

Decreases.

Question 36

In Warm Air, the Pressure ‘____’ less slowly with Height?

Answer 36

Decreases.

Question 37

Flying from an area of Warm Air to an area of Cold Air, True Altitude ‘____’ while the Indicated Altitude ‘____’. The Altimeter error will ‘____’ True Altitude (3)?

Answer 37

- Decreases. - Remains the same. - Over Read.

Question 38

Flying from an area of Cold Air to an area of Warm Air, True Altitude ‘____’ while the Indicated Altitude ‘____’. The Altimeter error will ‘____’ True Altitude (3)?

Answer 38

- Increases. - Remains the same. - Under Read.

Question 39

Warm Air is where True Altitude is ‘____’ than Indicated Altitude (QNH)?

Answer 39

Less.

Question 40

Cold Air is where True Altitude is ‘____’ than Indicated Altitude (QNH)?

Answer 40

Greater.

Question 41

What is the common saying, from hot to cold?

Answer 41

Don’t be bold.

Question 42

What is True Altitude?

Answer 42

Vertical Distance of the Aircraft Above Sea Level.