PHAK 8: Flight Instruments: EFD

Question 2

Electronic Flight Display (EFD)

What is an Electronic Flight Display (EFD)?

Answer 2

A modern “glass cockpit” system that includes Primary Flight Displays (PFDs) and Multi-Function Displays (MFDs), consolidating traditional flight instruments into digital screens.

Question 3

Electronic Flight Display (EFD)

What is the purpose of an Airspeed Tape on a PFD?

Answer 3

Displays airspeed as a vertical speed tape with markings for critical speeds (e.g., VX, VY, VR), color-coded ranges, and TAS at the bottom.

Question 4

Electronic Flight Display (EFD)

How is the Attitude Indicator improved on an EFD?

Answer 4

It spans the entire width of the PFD, offering better reference for all phases of flight, with data from the Attitude Heading and Reference System (AHRS).

Question 5

Electronic Flight Display (EFD)

How is altitude displayed on a PFD?

Answer 5

Using a vertical tape on the right side of the PFD, with current altitude shown in a black box in 20-foot increments.

Question 6

Electronic Flight Display (EFD)

What additional feature does the VSI have on an EFD?

Answer 6

Displays vertical speed as an arced indicator or vertical tape, often with a vertical speed bug for precise reference.

Question 7

Electronic Flight Display (EFD)

Where is the Heading Indicator located on a PFD, and how does it work?

Answer 7

Below the artificial horizon, modeled after an HSI, with data from a magnetometer via the AHRS.

Question 8

Electronic Flight Display (EFD)

What is unique about the Turn Indicator on a PFD?

Answer 8

A sliding bar moves below the triangle to show deflection, with data from AHRS accelerometers for coordinated flight.

Question 9

Electronic Flight Display (EFD)

Where is the Tachometer typically located in an EFD system?

Answer 9

On the MFD, but it can display on the PFD in case of screen failure.

Question 10

Electronic Flight Display (EFD)

What does the Slip/Skid Indicator look like on a PFD?

Answer 10

A horizontal line below the roll pointer, with one bar width off-center equal to one ball width displacement.

Question 11

Electronic Flight Display (EFD)

How is the Turn Rate Indicator displayed on a PFD?

Answer 11

As a trend line above the compass card, with tick marks denoting standard-rate or half standard-rate turns.

Question 12

Electronic Flight Display (EFD)

What does the Air Data Computer (ADC) do?

Answer 12

Processes pitot-static inputs to compute and display airspeed, altitude, and outside air temperature on the PFD. It also provides data to the autopilot.

Question 13

Electronic Flight Display (EFD)

What are Trend Vectors on an EFD?

Answer 13

Magenta lines on the airspeed and altitude tapes that show a 6-second projection of changes, helping pilots control airspeed and altitude.