EFIS Flashcards by Nathan Joned

What does EFIS stand for?

Electronic Flight Instrument System

This system integrates various flight data into a unified display.

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What are the main components of the EFIS?

4 cathode ray tube screens
2 ADCs
2 AHRSs
Various associated control panels

These components work together to present flight information to the pilot.

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What information is presented on the Primary Flight Displays (PFDs)?

Airspeed
Attitude
Altitude
Heading
Navigation
VSI
Flight director modes
Autopilot status

The PFD is crucial for pilot situational awareness during flight.

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What is the function of the Multi-Function Displays (MFDs)?

Displays HSI information, the map, and works as a reversionary mode for PFD and EICAS if either one fails

MFDs enhance situational awareness by providing multiple data sources.

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What does the pitot-static system provide information about?

Speed,
altitude, vertical speed, and air temperature for the EFIS system, ADCs,
stall protection system, cabin pressurization, and the ISI

This information is essential for the EFIS system, ADCs, and other critical systems.

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What does AHRS stand for?

Attitude Heading and Reference System

AHRS provides critical orientation data for flight control systems.

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What information does the AHRS provide?

Three-dimensional information
Provides three-dimensional
information. The information is supplied to the EFIS, weather radar,
automatic flight control system, FDR, flight control computers, EGPWS,
TCAS, stall protection system, and the fuel system. (Some aircraft have
IRS but it supplies the same information to the same systems).

Some aircraft may use IRS, which supplies similar information.

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What is the function of the Integrated Standby Instrument (ISI)?

Provides backup airspeed, attitude, and altitude information in the event of a failure of the PFDs

The ISI is crucial for maintaining situational awareness during instrument failures.

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What does the Total Air Temperature (TAT) probe measure?

Temperature information for the ADCs

This information is used to calculate total air temp (TAT), static air temp (SAT), and true airspeed (TAS).

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What is the purpose of the Air Data Reference Panel (ARP)?

Set the altimeter
Set DH or MDA during approaches
Select target airspeeds
Test the radio altimeter

The ARP is essential for configuring flight parameters.

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How is the barometric pressure setting adjusted?

By turning the “baro” knob. Press the knob to set standard 29.92

Accurate barometric settings are critical for altitude readings.

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What does the SPEED REFS knob do?

Used to set takeoff reference speeds on the PFD speed tape

This setting is vital for safe takeoff operations.

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What is indicated by the red V/S label on the PFD?

That the vertical speed data is unreliable or has failed

This alert is crucial for maintaining safe altitude changes.

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What does the HSI display on the PFD?

Navigation information

The HSI is essential for guiding the aircraft along its intended flight path.

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What does the AHRS use to produce angular and acceleration information?

A strapped gyro reference system combined with heading information from a magnetic flux detector unit

This combination provides a comprehensive 3D picture of the aircraft’s orientation.

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What is the function of the IRS mode select panel?

To control IRS 1 and IRS 2

This panel is essential for managing inertial reference systems.

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What does the IRS provide in the ATT mode?

Only provides attitude, heading, rate, and acceleration information

This mode is critical for basic flight orientation.

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What is the purpose of the standby magnetic compass?

Provides standby heading information

This compass serves as a backup for navigation.

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What information does the ISI display?

Airspeed
Attitude
Altitude
Slip/skid
Glideslope
Localizer

The ISI is a vital backup instrument during instrument flight.

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What does the CAGE pushbutton do on the ISI?

Used to cage the attitude of the ISI in the erect position. Level the horizon

Pressing it for more than 2 seconds resets the horizon to level.

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What does the BARO knob on the ISI set?

The barometric setting (altimeter setting)

Accurate barometric settings are essential for altitude readings.

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What does the red ATT warning flag indicate on the ISI?

Fault of the attitude function

This warning alerts the pilot to potential issues with the attitude indicator.

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What does the red IAS warning flag indicate on the ISI?

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Fault of the airspeed function

This warning is critical for ensuring accurate airspeed readings.

What does the SLEW switch do on the AHRS compass control panel?

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ABle to turn the heading (bbias it)

What is the alignment time for the **AHRS** in **MAG mode**?

70 seconds ## Footnote Quick alignment is essential for timely flight operations.

What is the alignment time for the **AHRS** in **DG mode**?

10 minutes ## Footnote This longer time is necessary for accurate directional information.

What message is displayed on the PFD during **AHRS alignment**?

Red ATT, red FD, and red MAG warning flags, along with a white ATT/HDG ALIGNING DO NOT TAXI message ## Footnote This message indicates that the AHRS is not yet ready for use.

What does the IRS provide in the **NAV mode**?

* Attitude * Acceleration information * Calculates the aircraft’s position for use by the FMS ## Footnote This mode is essential for navigation accuracy.

What is the **rapid alignment mode** for the IRS?

Allows the IRS to be rapidly realigned during a ground turn ## Footnote Accomplished by selecting the NAV knob to OFF and then back to NAV within five seconds.

What does the **declutter mode** do on the PFD?

Removes nonessential information from the PFD during aircraft upsets or unusual attitudes ## Footnote This mode helps pilots focus on critical flight data.

What does the green **AP label** indicate on the PFD?

Autopilot is active ## Footnote This label is crucial for understanding the aircraft's control state.

What does the amber **YD label** indicate on the PFD?

Both yaw dampers are disengaged ## Footnote This condition may affect aircraft stability.

What does the amber boxed **E** indicate on the PFD?

There is an out of trim condition with the elevator ## Footnote This condition requires pilot attention for safe flight.

What does the amber boxed **A** indicate on the PFD?

There is an aileron out of trim condition ## Footnote This condition requires pilot attention for safe flight.

What does the red **DISPLAY TEMP** message indicate on the PFD?

That the temperature of the display unit is above a certain limit ## Footnote This warning is critical for ensuring the functionality of the display.

What formats can the **MFD** display?

* HIS * NAV Sector * FMS * FMS Plan * Radar * TCAS * Terrain * Maintenance ## Footnote These formats provide various types of information for the pilot.

What does the **FORMAT selector** on the DCP control?

Determines the type of display format on the MFD ## Footnote This selector is essential for customizing the pilot's display.

What does the **nav sector mode** display on the MFD?

Provides a partial compass card with a background map displaying the location of the selected NAV station in green ## Footnote This mode aids in navigation by showing relevant station information.

What does the **FMS map mode** display on the MFD?

Displays the FMS track and waypoints in a spatially correct arrangement ## Footnote Shows time and distance to next waypoints for navigation.

What does the **radar mode** display on the MFD?

Displays radar returns on the MFD ## Footnote This information is crucial for avoiding obstacles and weather.

How does the **pitot-static system** function?

2 pitot static probes provide both pitot and static information to their respective ADCs ## Footnote This system is essential for accurate airspeed and altitude readings.

The pilot and copilot pitot tubes are pitot-static tubes, while the standby pitot tube is only a pitot tube. (TRUE/FALSE)

TRUE ## Footnote This distinction is important for understanding redundancy in the system.

What is used to enter reference speeds, MDA, DH, and barometric altimeter settings?

Air Data Reference Panel (ARP) ## Footnote This panel is essential for configuring flight parameters.

AHRS initialization takes approximately how much time in **MAG mode**, and how much time in **DG mode**, respectively?

50 seconds in MAG, 5 minutes in DG ## Footnote Understanding these times is critical for flight preparation.

Where is the **slip indicator** located?

Top of the attitude indicator under the white arrows ## Footnote This indicator helps pilots maintain coordinated flight.

When **DME hold mode** is selected, how is this indicated in the nav data field on the PFD?

What does the **Flight Mode Annunciator (FMA)** indicate in the upper left corner of the PFD display?

Active and armed AFCS modes ## Footnote This information is crucial for understanding the aircraft's automation state.

The target airspeed is indicated on the speed tape by which of the following labels?

T ## Footnote This label is essential for pilots to monitor airspeed during flight.

What does the top of the **low-speed cue** represent?

1.06 Vs ## Footnote This cue is critical for preventing stall during flight.

The trend vector indicates the speed that will be attained in ______ seconds based on the aircraft's current acceleration or deceleration rate.

10 ## Footnote This information helps pilots anticipate speed changes.

The Mach number is removed from the PFD when the aircraft's speed drops below ______ Mach.

0.40 ## Footnote This threshold is important for understanding aircraft performance.

How is an **ADC speed failure** indicated on the PFD?

A red boxed IAS label appears AND the airspeed indicator disappears ## Footnote This alert is critical for pilot awareness of system failures.

The PFD displays either VOR or FMS deviation information. What does 1 dot represent when VOR information is displayed, when localizer information is displayed, and when enroute FMS information is displayed?

* VOR: 5 degrees * LOC: 1 degree * FMS: 5 miles ## Footnote Understanding these deviations is essential for navigation accuracy.

During a climb, the bank authority is reduced by one half at approximately ______ feet.

31600 ## Footnote This reduction is important for maintaining safe climb performance.

How much time is required to align the **AHRS** when operating in the **DG mode**?

5 minutes ## Footnote This time is necessary for accurate directional information.

What is the power source for the **ISI**?

Battery bus (28v dc) ## Footnote This power source is critical for the ISI's operation.

EFIS Flashcards

(56 cards)