Instruments

Question 1

Pitot-static system and altimeter must be tested how often?

Answer 1

every 24 calendar months if the airplane is flown under IFR

Question 2

white arc on the airspeed indicator?

Answer 2

Vs0 - Vfe

Question 3

Green arc on the airspeed indicator

Answer 3

Vs1-Vno

Question 4

Yellow arc on the airspeed indicator

Answer 4

Vno-Vne

Question 5

Allowed variance of altimeter from field elevation?

Answer 5

75 ft

Question 6

Three forms of magnetic compass error:

Answer 6

-magnetic variation: variation of earths magnetic field
-magnetic deviation: variation of compass readings due to magnetic fields in the aircraft
-magnetic dip

Question 7

lines of equal magnetic variation:

Answer 7

isogonic lines

Question 8

to correct from true course to magnetic course

Answer 8

-add westerly variation
-subtract easterly variation
(west is best and east is least)

Question 9

magnetic compass dip errors in acceleration:

Answer 9

ANDS:
-accelerating indicates more northerly heading
-decelerating indicates more southerly heading

Question 10

two forms of magnetic dip error:

Answer 10

-acceleration error
-turning error

Question 11

magnetic compass dip errors in turning:

Answer 11

-turning to a northerly heading, compass initially undershoots the turn
-turning to a southerly heading, compass initially overshoots the turn
-COSUN: compass overshoots south and undershoots north

To a northerly heading: roll out about 30 degrees before your new heading.
To a southerly heading: roll out about 30 degrees after your new heading.

Question 12

Line of 0 magnetic variation

Answer 12

Agonic line