5. Communications

Question 1

Recall features of the Audio Control Panel

IDENT Switch

Answer 1

Push – Selects voice and coded ID of NAV1/NAV2 receivers (“ON” will be illuminated)

Push again –(switch is dark) Selects ONLY voice ID of NAV1/ NAV2 receivers

Question 2

Recall features of the Audio Control Panel

PA Button

Answer 2

Push –Enables PA transmissions from either the boom or mask microphones

Question 3

Recall features of the Audio Control Panel

RADIO/INT Switch

Answer 3

Momentary toggle switch to key a selected radio transmitter or the interphone

Question 4

Recall features of the Audio Control Panel

MIC SELECTOR/Call Switch

Answer 4

Push – Selects desired transmitter

Integral (C) light illuminates in conjunction with a chime for an incoming SELCAL – or for an interphone call (on INT button)

Question 5

Recall features of the Audio Control Panel

Volume Controls

Answer 5

Push – Buttons pop out to allow adjustment (and illuminate to confirm selection)

Question 6

Recall how to activate/deactivate the oxygen mask microphone

Answer 6

The oxygen mask microphone is contained within the oxygen mask

A boom/oxygen mask switch is located within each oxygen mask stowage box and connects the boom or oxygen mask microphone

When the mask is removed from the oxygen mask compartment, the mask microphone is activated

To deactivate the mask microphone, close the storage box doors and push the TEST/RESET button

Question 7

Recall function of the VHF Control Panel

Answer 7

Identify:

Frequency in use

TFR Switch

Standby Frequency

NOTE: Pushing the COMM TEST button temporarily disables the squelch

Question 8

Recall the function of the PA, Call and INTPH Switchlights on the overhead panel

PA ON

Answer 8

ON – Push to connect handset on the aft pedestal to the PA system when the handset is removed from its hanger

Extinguished – Replacing handset extinguishes the light, disconnects the handset from the PA and reverts the handset to its SVCINT function

Question 9

Recall the function of the PA, Call and INTPH Switchlights on the overhead panel

ATTND CALL

Answer 9

CALL – Push to initiate a call to the cabin

Illuminates when flight attendant calls the flight deck from a flight attendant station

Question 10

Recall the function of the PA, Call and INTPH Switchlights on the overhead panel

MECH CALL

Answer 10

CALL – Push to sound the mechanic call horn

Illuminates when ground personnel push the pilot call switch at the ground service panel

Question 11

Recall the function of the PA, Call and INTPH Switchlights on the overhead panel

MAINT INTPH

Answer 11

ON – Push switchlight to activate all service interphone jacks throughout the airplane

ON illuminates

When pushed again, the light extinguishes and all stations are disconnected from the SVC INT – except for the cockpit, e/e comp, ground control panel and flt att stations.

Question 12

Describe ways of making PA announcements from the flight deck

Answer 12

PA announcements can be made from the flight deck by pushing the ACP PA button and using the boom or oxygen mask microphone

The service interphone handset can also be used for PA announcements if the PA switch on the overhead panel is selected on

Flight deck PA announcements take priority over the cabin entertainment system or any PA announcements made from any cabin station

Question 13

Recall the differences between FLT and SERVICE Interphone

Answer 13

Pushing the MAINT INT switchlight activates all service interphone jacks throughout the airplane. ON illuminates. When pushed again, the light extinguishes and all stations are disconnected from the SVC INT – except for the cockpit, e/e comp, ground control panel and flt att stations. Note: the aft pedestal handset is used for SVC INT

SERVICE interphone allows for communications between the various service and maintenance locations around the aircraft, the cockpit and flight attendant stations

FLIGHT interphone provides communications between the flight crew as well as communications at the external power panel and avionics compartment

Question 14

Recall which systems are available for SELCAL and how to recognize an incoming call

Answer 14

The aircraft SELCAL system interfaces with the aircraft VHF systems

When a call is received, the respective MIC switch on the ACP illuminates and a chime sounds through the cockpit speakers and headphones

Question 15

Recall features of the CVR

Answer 15

Records and preserves the last 2 hours of cockpit sounds and communications

Continuously operates whenever power is available and no crew action is required

The CVR recording can be erased if the aircraft ground sensing system is in ground mode and the parking brake set by pushing the ERASE button on the CVR MICROPHONE MONITOR control panel

Question 16

Recall degraded cabin communications considerations when operating with GEN L OFF or Complete Loss of AC Power

Answer 16

No flight attendant CHIME capability exists with aircraft GEN L OFF or Complete Loss of AC Power…CABIN INTERPHONE must be selected ON to enable flight attendant communication with the cockpit (select CAB pushbutton on ACP, insure it is in the “up” position and volume adjusted to hear any potential FA calls)