4. Altimetry Flashcards Preview

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Flashcards in 4. Altimetry Deck (9)
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1
Q

List four reasons why vertical navigation (precise altitude awareness) is of vital importance to the pilot.

A

terrain awareness;
aircraft separation;
weather avoidance;
aircraft performance

2
Q

Altitude means vertical distance above …….. …….. …….. and is shown correctly on an altimeter when the prevailing …….. has been set on the subscale.

A

mean sea level; QNH

3
Q

Height means vertical distance above a specified ……..; it is shown on an altimeter when the appropriate …….. has been set on the subscale.

A

datum; QFE

4
Q

To read pressure altitude, what setting will you need on the subscale of your altimeter.

A

1013.2 hpa

5
Q

In the lower levels of the International Standard Atmosphere (ISA), the pressure decreases approximately one hpa for each …….. ft increase in altitude.

A

30

6
Q

If you maintain a constant altitude indication and do not change the subscale setting on the altimeter when flying from an area of high pressure to an area of low pressure, the altimeter will (under-read / over-read / read correctly).

A

over-read

7
Q

List two vitally important reasons why you should set QNH.

A

terrain clearance;

aircraft seperation

8
Q

The cruising level for a VFR flight on a (true / magnetic) track of 249 degrees is (odd / even) feet plus 500.

A

magnetic; even

9
Q

For flight along the coast below 10,000 ft on a magnetic track of 318 degrees, available cruising levels are …….., …….., …….. and ……..

A

3,500; 5,500; 7,500; 9,500ft