Ch 2C - Flight Instruments

Question 1

ISA

Answer 1

International Standard Atmosphere - standard conditions for flight instruments 29.92 in. Hg (14.7 lb/in^2 or 1013.2 millibars) and 15C(59F)

Question 2

PFD

Answer 2

Primary Flight Display - contains primary flight instruments

Question 3

MFD

Answer 3

Multifunction Display - variety of info (moving maps, airports, terrain, weather)

Question 4

AHRS

Answer 4

Attitude and Heading Reference System - uses electronic gyroscopes, accelerometers, and a magnetometer to determine attitude relative to the horizon and heading

Question 5

HSI

Answer 5

Horizontal Situation Indicator - displays current airplane heading in IFD

Question 6

ADC

Answer 6

Air Data Computer - uses temp and pressure readings to determine readings for instruments in IFD

Question 7

Instruments needed for VFR single engine flight

Answer 7

airspeed indicator, altimeter, magnetic compass, tachometer, oil pressure gauge, oil temp gauge, fuel gauge, manifold pressure gauge (constant speed prop), landing gear position indicator (retractable landing gear)

Question 8

Standard lapse rates (below 36,000 feet)

Answer 8

help calculate anticipated temps and pressures at various altitudes, temp drops 2C and pressure 1.00 inches Hg for each 1,000 feet increase of altitude

Question 9

Pitot tube

Answer 9

ram air pressure enters

Question 10

Use static pressure

Answer 10

Airspeed indicator, altimeter, vertical speed indicator

Question 11

Use pitot pressure

Answer 11

airspeed indicator

Question 12

Static port

Answer 12

takes in relatively undisturbed air

Question 13

V-speeds

Answer 13

Vso (end white arc) - stalling speed w/flaps down
Vs1 - (end green arc) - stalling speed w/flaps up
White arc - flap opp range/landings
Vfe (end white arc) - max speed w/flaps
Green arc - normal op range
Vno (end green arc) - max speed in non-smooth air
Yellow arc - only fly in smooth air/caution
Vne (red line) - never exceed

Question 14

Va

Answer 14

maneuvering speed, changes with aircraft weight, not marked

Question 15

Stall speed for a certain airplane

Answer 15

doesn’t change with altitude

Question 16

arrows on the altimeter

Answer 16

long- hundreds of feet
mid- thousands of feet
short- tens of thousands of feet

Question 17

indicated altitude

Answer 17

altimeter reading

Question 18

pressure altitude

Answer 18

height above the standard datum plane

Question 19

density altitude

Answer 19

pressure altitude corrected for temp, increase as temp increase

Question 20

calibrated altitude

Answer 20

indicated altitude corrected to compensate for instrument error

Question 21

true altitude

Answer 21

actual height above mean sea level

Question 22

absolute altitude

Answer 22

vertical distance above surface

Question 23

a one inch change on the altimeter

Answer 23

results in a 1,000 foot change in indicated altitude in the same direction

Question 24

temp to pressure relationship

Answer 24

temp up, pressure up, true altitude higher than indicated altitude

Question 25

trend information

Answer 25

immediate indication of a change in rate of climb/decent

Question 26

rate information

Answer 26

stabilized rate of change

Question 27

rigidity in space

Answer 27

a wheel spun rapidly will remain in a fixed position in the plane in which it is spinning

Question 28

Precession

Answer 28

tilting or turning of a gyro in response to pressure

Question 29

vacuum (suction) system

Answer 29

used to spin gyros in attitude and heading indicators

Question 30

true altitude to indicated altitude

Answer 30

if you fly from high pressure to low pressure area altimeter will indicate higher than true altitude, low to high altimeter will be lower than true altitude

Question 31

standard rate turn

Answer 31

alignment of wings on turn cordinator with turn index, 3 degrees per second

Question 32

turn cordinator

Answer 32

shows aircraft yaw and roll, adjustable miniature airplane

Question 33

slip

Answer 33

rate of turn is too slow for the angle of bank, ball moves to the inside of inclinometer

Question 34

skid

Answer 34

rate of turn is too great for the angle of bank, ball moves to outside of inclinometer

Question 35

heading indicator

Answer 35

must be aligned periodically with the magnetic compass due to precession

Question 36

variation

Answer 36

angular difference between the true and magnetic poles

Question 37

deviation

Answer 37

compass error due to disturbances from magnetic fields of the airplane and its electronic equipment

Question 38

magnetic dip

Answer 38

earth's magnetic field pulling the magnetic bar in a compass, results in a lag in reading in turns

Question 39

accelerating/decelerating in the northern hemisphere heading west/east

Answer 39

accelerating - compass shows a turn to the north | decelerating - compass shows a turn to the south

Question 40

right/left turns in northern hemisphere while heading north

Answer 40

right turn - initially indicates a turn to the west | left turn - initially indicates a turn to the east

Question 41

integrated flight display

Answer 41

digital flight instruments

Question 42

magnetometer

Answer 42

senses earths magnetic field to function as a compass, less errors

Question 43

slip/skid indicator

Answer 43

helps maintain cordinated flight in IFD

Question 44

turn rate indicator

Answer 44

provide reference marks for making standard rate turns in IFD