5. Flight / Nav Data Instruments

Question 1

Where do the ADCs get pitot / static information?

Answer 1

ADC 1 - left side pitot / static system
ADC 2 - Right side pitot / static system

Question 2

What do the ADCs feed information to?

Answer 2

1. AFCAS
2. FMS
3. Attitude/Heading System (IRS) (ADC’s provide TAS to IRS’s)
4. EFIS
5. FWS
6. GPWS
7. FDR
   8 Transponders

Question 3

What happens if an ADC fails? What can you do about it?

Answer 3

A level 2 alert is issued.

The offside ADC can be selected by using the ADC source select P/B.

Question 4

Where do you set the QNH reference pressure?

Answer 4

Altimeter set panel

Question 5

What feeds the combined standby altimeter or altimeter / ASI?

Answer 5

Pitot static system 3

Question 6

What do the angle of attack vanes provide information to?

Answer 6

2 AoA vanes provide data to their respective ADC’s, AFCAS and the Stall Prevention System.

Question 7

Where does the TAS information to the IRS’s come from?

Answer 7

from the ADC’s

Question 8

From where can you enter data into the IRS’s?

Answer 8

1. FMS (preferred)
2. Manually via the Inertial System Display Unit (ISDU)

Question 9

If an IRS fails, what do you see and what can you do?

Answer 9

Alert will be presented (IRS 1&2 = level 2 alert / IRS 3 = level 1 alert).
IRS 3 can be selected at the ATT/HDG source select push button on the main instrument panel.

Question 10

How and from where can you align the IRS’s?

Answer 10

Mode selector at the MSU in either ALIGN or NAV

Question 11

How long does an alignment take?

Answer 11

full alignment = 10 minutes

Question 12

Can the aircraft be moved during alignment?

Answer 12

No

Question 13

What mode will the IRS’s be in after alignment in NAV?

Answer 13

NAV mode

Question 14

How could you re-align the IRS’s?

Answer 14

Quick align = select ALIGN mode briefly. The ALIGN mode light will come on for 30 sec.

The ALIGN mode light must be out before the aircraft is moved again.

Question 15

Where can weather data be displayed?

Answer 15

on the NAV displays

On some aircraft on the MFDU displays

Question 16

Can the pilot’s displays be independently controlled?

Answer 16

Yes for:

1. ON/OFF
2. Brightness
3. Range

Other weather radar functions are controlled through a single control panel on the pedestal

Question 17

What do dashes in the VOR/DME frequency and course windows mean?

Answer 17

Dashes = frequency is auto tuned

Question 18

What can you do if an ILS fails?

Answer 18

Offside ILS can be selected with the ILS source select P/B.

Question 19

When is ILS frequency tuning inhibited?

Answer 19

In LAND mode

Question 20

What can you do if a Rad Alt fails?

Answer 20

1. Level 2 alert
2. Offside RA can be selected at the RA source select P/B.

Question 21

What do the RA’s supply?

Answer 21

1. EFIS
2. FWC
3. GPWS
4. AFCAS

Question 22

What do each pilot’s EFIS displays consist of?

Answer 22

2 display units
1 PFD and 1 ND

Question 23

How many EFIS control panels are there?

Answer 23

2

Question 24

What can you do in case of display unit failure?

Answer 24

use the PFD/ND XFR P/B on the source select panel

Question 25

Where are pitch, roll, and heading compared?

Answer 25

By the FWC
Differences will be detected and alerts presented

Question 26

Where is attitude normally displayed?

Answer 26

PFD

Question 27

Where is ILS information displayed and in what modes?

Answer 27

On both PFD and ND
In ROSE and ARC modes

Question 28

Where is heading and course normally displayed?

Answer 28

ND’s and RMI’s

Question 29

Where is the heading bug displayed?

Answer 29

On the ND in ROSE, ARC and MAP modes.
Also displayed on the PFD

Question 30

What can be displayed on the RMI’s?

Answer 30

DME in the top window
2 x VOR bearings
2 x ADF bearings

Question 31

When is the standby horizon powered?

Answer 31

When BATT switch is on
or when fuel lever is open(some aircraft)

Question 32

How is avionics cooling accomplished?

Answer 32

3 x blower fans
2 x suction fans
1 x emergency cooling fan