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GoJet CRJ-550 > EFIS > Flashcards

EFIS Flashcards

1
Q

What comprises the Electronic Flight Instrument System (EFIS)?

A

Four display screens.
Two Attitude and Heading Reference Systems (AHRS).
Two Air Data Computers (ADC).
Control panels.

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2
Q

What information is provided by the EFIS to the pilot?

A

Airspeed, Altitude, Heading, Attitude, Navigation and Auto-Pilot Annunciation.

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3
Q

What is displayed on the PFD?

A

Airspeed, altitude, attitude, vertical speed, flight director mode, auto-pilot status, navigation information, heading.

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4
Q

What is displayed on the MFD?

A

HSI indications and a map display - can be displayed in many formats.
EICAS information can be displayed in ‘reversionary mode’.

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5
Q

Air pressure information sensed by the pitot-static system is sent to;

A

ADCs.
Standby instruments.
CPAM.
Stall protection system.

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6
Q

The AHRS sends information to;

A 
EFIS.
Weather radar.
Auto flight control system.
Flight data recorder.
Flight control computer.
EGPWS.
TCAS.
Stall protection system.
Fuel system.
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7
Q

What backup indications does the Integrated Standby Instrument (ISI) provide?

A

Airspeed, altitude, attitude and slip.

GS and LOC information can also be displayed.

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8
Q

How many pitot-static probes are there?

A

Two.

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9
Q

How many standby static ports are there?

A

Two

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10
Q

How many total air temperature sensing probes are there?

A

One.

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11
Q

How many pitot tubes are there?

A

One.

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12
Q

How does the ISI receive air data?

A

A dedicated pitot tube and the two static ports.

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13
Q

What are the static ports connected to?

A

The ISI and the cabin pressure control panel.

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14
Q

What the outputs of the ADC?

A 
IAS and TAS.
VMO and MMO.
Mach number.
Altitude.
Vertical speed.
TAT and SAT.
ISA variations.
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15
Q

What does the pilot use the Air Data Reference panels for?

A

Set barometric pressure.
Set decision height or MDA on approaches.
Set target and V airspeeds.
Test the radio altimeter.

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16
Q

What does the airspeed trend vector indicate?

A

The speed that will be achieved in 10 seconds based on the current rate.

17
Q

Where is the Mach number displayed?

A

At the top of the speed tape in white provide the current Mach number is above .45,

18
Q

When does the altitude alert system provide an aural warning?

A

When within 1000 ft of capturing an altitude in a climb or descent.
When the altitude deviates more than 200 ft from a previously captured altitude.

19
Q

What does a cyan altitude bug appearing on the altitude tape mean?

A

When the altitude information from the ADCs differ by more than a predetermined value (ADC mismatch).

20
Q

How is the pilot alerted that the radio altimeter has failed?

A

A red ‘boxed’ RA is displayed on the PFD.

21
Q

How is the pilot alerted to an ADC failure?

A

Red ‘boxed’ indications will appear on the PFD in place of the usual indication position.

22
Q

How does the pilot select a navigation source?

A

By selecting ‘nav source’ on the Display Control Panel.

23
Q

What do the ‘off course dots’ represent on the PFD navigation display?

A

In VOR mode - 1 dot = 5º
In LOC mode - 1 dot = 1º
In FMS mode - 1 dot = 5 nm

24
Q

When is the amber margin indicator displayed on the PFD?

A

When windshear caution and warning messages are displayed.

25
Q

How are the autopilot flight modes displayed?

A

On the top of the PFD. For lateral and vertical modes green (captured) on the left of a cyan line and white (armed) on the right.

26
Q

Where is half bank mode annunciated?

A

On the top left of the PFD.

27
Q

How is an elevator ‘out of trim’ condition displayed?

A

A ‘boxed’ E on the top left of the PFD attitude indicator.

28
Q

How is an aileron ‘out of trim’ condition displayed?

A

A ‘boxed’ amber A on the top left of the PFD attitude indicator.

29
Q

What does a red ‘boxed’ DCP on the PFD indicate?

A

Failure of the Display Control Panel.

30
Q

How many MFD formats are there?

A

7.

31
Q

What are the three components of the AHRS?

A

AHRS computers.
Flux detector units.
Remote compensator units.

32
Q

What components does the AHRS send information to?

A 
EFIS.
Weather radar.
Auto-flight control system.
Flight data recorder.
Flight control computer.
EGPWS.
TCAS.
Stall protection system.
Fuel system.
33
Q

What is the difference between DG and MAG mode on the compass panel?

A

DG mode ignores input from the flux detectors.

34
Q

What does the slew switch on the compass panel control?

A

It rotates the DG indications on the PFDs. If in DG mode the DG information will remain in the new position, if in MAG mode it will return to the sensed magnetic direction.

35
Q

When is the AHRS aligned?

A

When the aircraft is first powered up and stationary.
70 seconds to align in MAG mode.
10 minutes to align when in DG mode.

36
Q

What minimum power is required for the ISI to function?

A

28 volts DC from the battery bus.

37
Q

What ILS navigation source information is displayed in the ISI?

A

VHF NAV 1 or the backup tuning unit.

GoJet CRJ-550 (20 decks)

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