Avionics - Communications

Question 1

What provides the flight crew with the interface to
control the audio functions of all radio communication
and navigation systems?

Answer 1

The Audio Control Panel (AOM 9-09-50)

Question 2

Where are the antennas for VHF 1, VHF 2, and

VHF 3 located respectively on the fuselage?

Answer 2

Top, bottom, top (AOM 9-09-50)

Question 3

What services can the optional VHF 3 provide?

Answer 3

Voice and data link capability, like ACARS and

CPDLC (AOM 9-09-50)

Question 4

If the TUNE knob on the RSP is in the NORM position,
list some of the ways frequencies can be
tuned:

Answer 4

Via the CCP, via the MKP or via the MFW TUNING

window (AOM 9-09-50)

Question 5

What does the HF communication system provide?

Answer 5

Long range air-to-air, air-to-ground and groundto-
air communication (AOM 9-09-50)

Question 6

What is SELCAL used for?

Answer 6

It is a ground-to-air calling system that relieves
the flight crew from having to continuously
monitor the VHF

Question 7

Where is the ramp audio jack located?

Answer 7

On the lower LH portion of the forward fuselage,
it is part of the STEERING DISENGAGE/RAMP
INTERPHONE panel

Question 8

Where does left MKP tuning enter frequencies

into?

Answer 8

1 Radios (NAV and COM) (AOM 9-09-30)

Question 9

Where does right MKP tuning enter frequencies

into?

Answer 9

2 Radios (NAV and COM) (AOM 9-09-30)

Question 10

What does pushing the microphone select button

on the Audio Control Panel (ACP) do?

Answer 10

Selects the microphone audio and makes the

selection the active transmitter (AOM 9-09-30)

Question 11

What do the audio control knobs on the

ACP do?

Answer 11

Provide for selection and volume control of the

associated received audio signal (AOM 9-09-30)

Question 12

What does the HDPH knob on the ACP do? The

SPKR knob?

Answer 12

Controls headphone volume. Controls the selection
of the speaker on/off and the volume for the
flight deck speakers (AOM 9-09-30)

Question 13

Can the volume of the aural voice and tone warnings
to the speaker be adjusted by the SPKR knob
on the ACP?

Answer 13

No (AOM 9-09-30)

Question 14

What does the BOOM/AUTO/MASK knob on the

ACP in the AUTO position allow for?

Answer 14

The oxygen mask microphone to be automatically
selected when the oxygen mask is donned
and switches back to boom when the oxygen
mask is properly stowed (AOM 9-09-30)

Question 15

What does the VOX knob on the ACP do?

Answer 15

Provides on/off and sensitivity control for the

voice-activated interphone (AOM 9-09-30)

Question 16

What does the ST knob on the ACP do?

Answer 16

Controls the sidetone volume in the selected

radio (AOM 9-09-30)

Question 17

What does pushing the AUDIO BACKUP button on

the AUDIO JACK PANEL do?

Answer 17

It recovers the use of the onside radio when full

ACP functionality is not available (AOM 9-09-30)

Question 18

What does pushing the AURAL MUTE button on

the AUDIO JACK PANEL do?

Answer 18

It inhibits the aural alerts on the respective side
and displays the cyan AVNX AURAL WARN 1(2)
OFF CAS message (AOM 9-09-30)

Question 19

Where are the PTT buttons located at for each

pilot?

Answer 19

One momentary PTT button on the CCP, one
momentary PTT button on the sidestick controller
and one 3-way position slide switch on the
glareshield panel (AOM 9-09-30)

Question 20

What are the switch positions for the TUNE knob

on the RSP?

Answer 20

COM 1 (2) 121.5, NORM, and L (R) MKP ONLY
(AOM 9-09-50)

Question 21

If MKP ONLY is selected without a display tuning
(RTSA) failure, what message will be displayed
over the tuning window?

Answer 21

LEFT/RIGHT SIDE DISPLAY TUNING INHIBITED

AOM 9-09-50

Question 22

If the crew receives a new ACARS message, how

will they be alerted?

Answer 22

By a cyan ACARS MESSAGE CAS (AOM 9-09-50)

Question 23

Can you rely on ADF indications on the PFD while

transmitting in HF?

Answer 23

No (AOM 2-64)