EFIS

Question 1

What is the function of the trend vector on the airspeed tape?

Answer 1

The trend vector predicts aircraft speed 10 seconds in the future.

Question 2

If the aircraft exceeds +30/-20º of pitch or 65º of bank, what will the PFD do?

Answer 2

It will de-clutter, and provide a red chevron pointing to the sky.

Question 3

What does a DCP 2 message indicate on the Captain’s PFD?

Answer 3

The FO’s display control panel is controlling his flight instruments.

Question 4

How long does the AHRS take to initialize on the ground vs in flight?

Answer 4

70 seconds on the ground, and 10-35 seconds in flight.

Question 5

If booting the AHRS in DG mode how long could the initialization process take?

Answer 5

10 minutes.

Question 6

What does a red X through the airspeed tape, altitude tape, and VSI indicate on the Captain’s PFD?

Answer 6

This indicates that ADC 1 has failed. The QRH should be referenced which will guide the Captain to select ADC 2 on the Source Select Panel. An amber ADC 2 message will be displayed on the PFD once selected and information will be restored.

Question 7

What does the Flight Mode Annunciator in the upper left corner of the PFD display?

Answer 7

Current flight mode in green, armed mode in white.

Question 8

What powers each AHRS if its respective power source is lost?

Answer 8

Battery power for up to 11 minutes.

Question 9

If only supplied battery power, will the AHRS reinitialize?

Answer 9

No.

Question 10

Which pitot tube provides information to the Integrated Standby Instrument (ISI)?

Answer 10

Pitot 3

Question 11

How many seconds of warning is provided by a Traffic Advisory (TA)?

Answer 11

45 sec.

Question 12

How many seconds of warning is provided by a Resolution Advisory (RA)?

Answer 12

30 seconds

Question 13

In order to display TCAS information, what must the MFD range be selected to?

Answer 13

It must be selected to at or below 40 miles.

Question 14

During a Resolution Advisory (RA), what happens to the MFD range?

Answer 14

It will reduce to 2.5 miles.

Question 15

Explain the four TCAS modes NORM, ABOVE, BELOW, and ABV/BLW.

Answer 15

• Norm - TCAS targets are displayed from +/- 2,700’ of aircraft altitude.
• ABOVE - TCAS targets are displayed from -2,700’ through +9,900’ of aircraft altitude.
• BELOW - TCAS targets are displayed from -9,900’ through +2,700’ of aircraft altitude.
• ABV/BLW - TCAS targets are displayed from +/- 9,900’ of aircraft altitude.

Question 16

How is a TCAS test performed?

Answer 16

Press the TFC button on the display control panel and verify the white sector “tic-marks” are displayed on the inner ring of the MFD. Select the TCAS page on the Radio Tuning Unit (RTU) and press the test button. Observe the white, blue, yellow, and red aircraft targets on the MFD, and listen for the “TCAS system test OK” aural message indicating a sucessful test.

Question 17

What is indicated by the EFIS COMP MON message?

Answer 17

A discrepancy exists between the left and right EFIS displays.

Question 18

Which navigation sensors are normally considered primary?

Answer 18

GPS

Question 19

How many DME channels is the aircraft equipped with?

Answer 19

Six. Two are dedicated to each Radio Tuning Unit (RTU), and the other four are used for FMS position accuracy.

Question 20

How many radio altimeters are there?

Answer 20

Two

Question 21

If the FMS database is out of date, what color will it be displayed in?

Answer 21

Amber.

Question 22

How long is Ground Clutter Suppression (GCS) active after pressing the button?

Answer 22

12 seconds.

Question 23

What is radar attenuation?

Answer 23

Attenuation occurs when the radar beam is absorbed by an extremely intense shaft of precipitation. This absorbtion is displayed as a “shadow” on the radar screen, and typically indicates an area of extreme precipitation that should be avoided.

Question 24

How does the weather radar alert the flight crew of possible attenuation?

Answer 24

The crew is alerted to possible attenuation by the presence of a yellow backer bar on the outer range ring of the MFD behind the area of attenuation. This feature is only available when the GAIN knob is in NORM, and the radar is selected to WX.