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Flight Instruments Flashcards

1
Q

The electronic instrument displays receive sensor data from what component?

A

The Air Data Computer

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2
Q

The EADI and EHSI operate in what modes?

A
  • Enroute

- Approach

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3
Q

If the pitch values approach their limits, red chevrons are used to indicate what?

A

Nearest direction for a level flight attitude recovery

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4
Q

The EHSI displays a 360° rotating compass scale divided into 5° and 10° increments and referenced to what?

A

A white triangular heading index (lubber line)

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5
Q

Pulling out the HDG knob does what?

A

Resets HDG bug to present aircraft heading

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6
Q

The upper left corner of the HSI displays what?

A
  • Distance to next selected point
  • Aircraft groundspeed
  • Time to go to next point
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7
Q

When the EHSI is in the HSI normal mode, pressing the MAP button changes the display to what mode?

A

Navigation map mode

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8
Q

The bearing pointer select buttons are used to cycle the EHSI bearing pointers through what three modes?

A
  • VOR navigation source display
  • GPS navigation source display
  • Declutter mode
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9
Q

On the EHSI, the course deviation bar indicates the centerline of the selected course relative to what?

A

Aircraft symbol

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10
Q

For ILS glidepath, what is displayed on the right side of the instruments with a green deviation pointer which moves in relation to the scale to indicate glidepath center with respect to aircraft position?

A

Stationary vertical scale

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11
Q

The VSI indicates what two things?

A
  • Direction of vertical motion

- Rate of motion

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12
Q

What range does the VSI show climbs or descents?

A

0 to 6000 feet per minute

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13
Q

The ASI Mach number window is blanked below what Mach?

A

.40 Mach

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14
Q

As altitude increases, max operation airspeed (Vmo) will do what?

A

Decrease

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15
Q

The baro-set correction knob is used to set what into the altimeter so it displays correct altitude indications?

A

Pressure

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16
Q

The standby instruments can be used for a limited time in the event of a failure of what primary system?

A

Electrical

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17
Q

What is the red and white “barber pole” on the ASI?

A

A velocity/Mach limiting pointer

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18
Q

How is the standby attitude indicator caged?

A

Pulling and turning the PULL TO CAGE knob

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19
Q

True or False: The standby altimeter is operated by static pressure from the primary pitot/static system

A

False

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20
Q

What does the AOA computer receive inputs from?

A
  • AOA vane
  • Flap position microswitch
  • Landing gear
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21
Q

What does the white triangle at 4.9 units on the AOA gauge indicate?

A

Max range

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22
Q

What does the white diamond at 8.8 units on the AOA gauge indicate?

A

Max endurance

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23
Q

What does the green arc on the AOA gauge indicate?

A

Normal approach speed

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24
Q

What does the red radial on the AOA gauge indicate?

A

Stall

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25
Q

What does a higher the number on the AOA gauge indicate?

A

Greater the Angle of attack

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26
Q

What radial on the AOA gauge indicates a stall?

A

18 units

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27
Q

How many units/knots will the AOA gauge be at when the stick shaker is activated?

A

15-16 units or 5 to 10 knots above stall speed

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28
Q

When the AOA test switch is in the low position, what will the indexer and gauge show?

A
  • Amber donut

- 10.5 units

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29
Q

The center arrow on the accelerometer moves up and down to indicate what?

A

Current G load

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30
Q

What is the CWS interconnected with?

A

MASTER WARN and MASTER CAUT annunciators

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31
Q

What components make up the EFIS system?

A
  • EFIS control panel
  • EADI
  • EHSI
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32
Q

When the EHSI is in HSI normal mode pressing the map button (MAP) changes the display to which mode?

A

Navigation map

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33
Q

The bearing pointer select buttons are used to cycle the EHSI bearing pointers through what modes?

A
  • VOR
  • GPS
  • Declutter
34
Q

True or false: In the composite mode, both attitude and heading information can be displayed on either the EADI or EHSI

35
Q

The primary pitot probe at the right wingtip and primary static ports on the sides of the aft fuselage provide necessary pressures to what?

A

Air Data Computer

36
Q

The EFIS system provides uncluttered unusual attitude information on the EADI when the aircraft exceeds which set of predefined limits?

A
  • Pitch +30° or -20°

- Roll angle greater than 65°

37
Q

The altimeter displays baro-set data into windows in what formats?

A
  • Inches of mercury

- Millibars

38
Q

True or false: The conventional magnetic compass can be used in case of total electrical failure, or as an instrument cross-check

39
Q

If pitch or roll attitude failure occurs, what words appear in red letters at the top center of the EADI screen?

A

ATTITUDE FAIL

40
Q

In the NAV MAP mode on the EHSI, which full circle range scales are available?

A

5, 10, 20, 40, 80, 160, 240, 320, and 1000 NM

41
Q

The standby attitude indicator will supply accurate information for at least how many minutes after electrical failure?

42
Q

True or False: If either pilot selects EFIS composite mode, the displays in the other cockpit are not affected

43
Q

Which button on the digital clock is used to move the function indicator to the desired setting?

44
Q

True or False: The CTL button is used to set minutes in clock LT mode

45
Q

After reaching 59 minutes and 59 seconds, the count up timer will display hours and minutes to what limit?

A

99 minutes and 59 seconds

46
Q

The MASTER WARN and MASTER CAUT switchlights are interconnected with what?

A

Main annunciator panel

47
Q

Anytime a warning or caution annunciator on the main annunciator panel in either cockpit lights, the respective MASTER WARN or MASTER CAUT switchlights do what?

A

Flash in both cockpits

48
Q

A flashing MASTER WARN light on the switchlight panel should be accompanied by what?

A

A decaying tone

49
Q

True or False: All IDARS functions are controlled by the pilot in the front cockpit using the FDR control panel

50
Q

Where is the flight data recorder portion of the IDARS installed at?

A

Left avionics bay

51
Q

When IDARS reaches approximately 80% full, which annunciator will illuminate?

A

Green MAINT

52
Q

The accelerometer displays instantaneous normal acceleration in what range of G’s?

53
Q

To perform a count up with the digital clock, the function indicator must be over what label?

54
Q

Angle of attack information is provided on the AOA indexer when what condition is met?

A

The landing gear is down and locked

55
Q

When a flashing master switchlight is reset, the associated annunciator on the main annunciator panel will do what as long as the malfunction or failure condition persists?

A

Remain illuminated

56
Q

True or False: The FT function of the digital clock does not function in this aircraft

57
Q

Pilot warning tones are generated in a tone generator in the AOA computer and routed to what?

A

Helmet audio connections

58
Q

The data transfer module is used for digital information storage, loading, and retrieval. What is it?

A

A portable memory cartridge

59
Q

What is a slow approach speed indicated by?

A

Upper green chevron on the AOA indexer

60
Q

How are heading and course set on the EHSI?

A

Using the HDG and CRS knobs on the EFIS control panel

61
Q

What are the three EFIS modes?

A
  • Enroute
  • Approach
  • Composite
62
Q

EFIS approach mode adds what elements to the standard instrument displays?

A
  • Glideslope
  • Localizer
  • Marker beacon
63
Q

What are the pitch and roll parameters that cause the EFIS to declutter the EADI during unusual attitudes?

A
  • Pitch angle exceeds +30° or -20°

- Roll angle exceeds 65°

64
Q

The EADI display returns to normal when the aircraft attitude returns to which parameters?

A
  • Less than 25° nose-up or 15° nose-down pitch

- Bank angle less than 60°

65
Q

What is the purpose of the vertical speed indicator?

A

Displays vertical speed and direction of the aircraft

66
Q

What information does the airspeed indicator display?

A
  • Indicated airspeed
  • Mach number
  • Maximum operating airspeed (Vmo)
67
Q

As altitude increases, Vmo and the barber pole will do what?

A

Decrease, move downward

68
Q

How can you tell if the ADC has failed or its data is invalid?

A

The electronic instruments will indicate a failure

69
Q

What are the standby instruments?

A
  • Standby airspeed indicator
  • Standby attitude indicator
  • Standby Altimeter
  • Standby Turn and bank indicator
  • Magnetic compass
70
Q

How are the standby instruments powered?

A
  • Battery bus

- Auxiliary battery

71
Q

How is the standby airspeed indicator operated?

A

By pitot and static pressure from the secondary pitot/static system

72
Q

When should you cage the standby attitude indicator?

A
  • Before applying or removing electrical power

- Before engine start and shutdown

73
Q

After loss of all electrical power, how long will the stanbdy attitude indicator provide pitch and roll information and to what accuracy?

A
  • Nine minutes

- Within 6°

74
Q

The stick shaker is activated approximately how many knots above stall speed?

A

5-10 knots

75
Q

What does the green arc on the AOA gauge indicate?

A

Normal approach speed (optimum angle of attack or “on-speed”)

76
Q

When will either the MASTER WARN or MASTER CAUTION switchlights illuminate?

A
  • Anytime a warning or caution annunciator illuminates in either cockpit
  • The MASTER WARN illuminates with the FIRE light
77
Q

When showing, what does the red indication in the standby turn and bank indicator mean?

A

Turn rate information is not available

78
Q

When should readings be taken from the magnetic compass?

A

During level, unaccelerated flight

79
Q

What is the purpose of the two resettable needles on the accelerometer?

A

Record maximum deviation above and below +1G experienced during flight

80
Q

What indications can be illuminated on the flight data recorder annunciator?

A
  • Green MAINT

- Amber FAIL

T-6 Systems (12 decks)

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