Comm-Nav

Question 1

Can the pilots adjust the aural warning system volume?

Answer 1

No

Question 2

How many speakers are installed in the CRJ-700 cockpit?

Answer 2

Two

Question 3

Does the ACM have a dedicated speaker associated with his Audio Control Panel?

Answer 3

No

Question 4

What is the function of the MASK / BOOM switch located on the Audio Control Panel?

Answer 4

It controls the oxygen mask’s microphone. When the switch is selected to BOOM, it activates the boom mike on the associated headset and deactivates the oxygen mask mike.

Question 5

What will occur if the Captain selects his EMER / NORM switch to the EMER position?

Answer 5

His headset is connected directly to VHF #1 and NAV #1 and his ACP is rendered inoperative.

Question 6

What will occur if the First Officer selects his EMER / NORM switch to the EMER position?

Answer 6

His headset is connected directly to VHF #2 and NAV #2 and his ACP is rendered inoperative.

Question 7

What is the function of the CHIME switchlight located on the Interphone Control Unit?

Answer 7

It sounds a high/low chime in the cabin

Question 8

What is the function of the EMER switchlight located on the Interphone Control Unit?

Answer 8

It is used to notify the Flight Attendant of an emergency. When selected, it sounds a high/low chime in the cockpit and the switchlight flashes amber.

Question 9

What occurs in the passenger cabin after the EMER switchlight on the Interphone Control Unit is pressed?

Answer 9

A red light flashes on the mid-cabin overhead EXIT sign and at the Flight Attendant’s headset cradle, the amber EMG light flashes.

Question 10

What are locations of the Service Interphone Panels that allow maintenance personnel to talk to the cockpit crew?

Answer 10

o Avionics Bay
o Aft Equipment Bay
o External Service Panel
o The Refuel/Defuel Control Panel

Question 11

What is the function of the Radio Tuning Units (RTU)?

Answer 11

o VHF COMM. And NAV radios
o ADF radios
o ATC transponders
o TCAS

Question 12

What is the function of the Backup-Tuning Unit (BTU) located on the center pedestal?

Answer 12

The BTU enables reversionary operation of COMM #1 and NAV #1 in the event of the total loss of AC power.

Question 13

What color represents the normal on-side information for the associated Radio Tuning Unit?

Answer 13

White

Question 14

What color represents the normal cross-side information for the associated Radio Tuning Unit?

Answer 14

Yellow

Question 15

What is the function of cross-side tuning?

Answer 15

It allows a pilot to display data and control the other pilot’s radio at their own RTU.

Question 16

How is cross-side tuning established?

Answer 16

By selecting the 1 / 2 key

Question 17

What is the function of the RTU reversionary control?

Answer 17

To regain cross-side tuning in the event of an RTU failure

Question 18

How can cross-side tuning be regained after an RTU failure?

Answer 18

By selecting the RTU INHIBIT switch associated with the failed RTU and then selecting the 1 / 2 key

Question 19

What is the procedure for activating the Backup Tuning Unit?

Answer 19

Move the BTU mode selector from to STBY to ON

Question 20

How is the changing of frequencies accomplished on the Backup Tuning Unit?

Answer 20

With the COMM / NAV selector and frequency select knob on the BTU.

Question 21

Is the FMS Control Display Unit (CDU) capable of performing as a remote controller for the COMM radios, ADF recievers and ATC transponders?

Answer 21

Yes

Question 22

What is the function of the FMS TUNE INHIBIT switch located on the lower center pedestal?

Answer 22

This is used to prevent the FMS from controlling the radios. In the INHIBIT position, the remote tuning function of the FMS is disabled.