Boeing B737 MAX - Communications

The call system is used as a means for various crewmembers to gain the attention of other crewmembers and to indicate that interphone communication is desired. Attention is gained through the use of lights and aural signals (chimes or horn). If the flight deck calls the cabin crew, the visual signal at called position is:

Pink.

Blue.

Blue then becomes red after 5 seconds.

Green.

Correct! Wrong!

The pilots can transmit directly over the flight interphone by using the control wheel PTT switch. Alternately, any crewmember with an ACP can transmit/receive over the flight interphone by using their related ACP and normal PTT switches. Any standard microphone may be used with the flight interphone system.

True.

False.

Correct! Wrong!

The Cockpit Voice Recorder in AUTO:

Always powers the CVR when DC bus 2 is powered

Always powers the CVR from first engine start until 5 minutes after last engine shutdown.

Always powers the CVR when DC bus 1 is powered.

Always powers the CVR when AC Transfer bus 1 is powered.

Correct! Wrong!

In the degraded mode of operation, are the ACP transmitter selectors functional?

Yes.

No.

Correct! Wrong!

When is the Cockpit Voice Recorder active?

In flight only.

Anytime 115 VAC is applied to the aircraft.

Anytime DC power is available

Anytime the battery switch is ON.

Correct! Wrong!

The MASK-BOOM switch allows selection of the oxygen mask microphone or the boom microphone. The MASK-BOOM switch affects the operation of the hand microphone.

False.

True.

Correct! Wrong!

The MASK-BOOM switch does not affect the operationof the hand microphone.

In case of degraded audio system operation:

Audio warnings for altitude alert and GPWS are not heard. Windshear alerts are not affected.

Audio warnings for altitude alert, GPWS and windshear are not heard.

Audio warnings for altitude alert are not heard.

Correct! Wrong!

With the Captain's ACP operating in degraded mode, at that station:

VHF 2 is the only useable radio.

All ACP transmitter selectors remain functional, but receiver selectors are lost.

The flight interphone remains useable, the PA is lost.

Altitude alert, GPWS and windshear audio warnings are not heard.

Correct! Wrong!

If the VOICE RECORDER Switch is selected to ON:

It powers the cockpit voice recorder at all time for a maximum of 25h.

It powers the cockpit voice recorder from first engine start until 5 minutes after last engine shutdown.

It powers the cockpit voice recorder until first engine start, then trips the switch to AUTO.

It powers the cockpit voice recorder at all time.

Correct! Wrong!

The cockpit voice recorder uses four independent channels to record flight deck audio for _____

25 hours.

300 minutes.

120 minutes.

60 minutes.

Correct! Wrong!

Recordings older than 120 minutes are automatically erased.

The VHF 1 antenna is located on the lower fuselage and VHF 2 is on the upper fuselage.

True.

False.

Correct! Wrong!

The VHF 2 antenna is located on the lower fuselage and VHF 1 is on the upper fuselage.

How are the communication systems controlled?

By their respective control modulators.

By the Mode Control Panel.

By the Audio Control Panel.

Correct! Wrong!

The Cockpit Voice Recorder (CVR) can be erased by:

Pushing the erase button for 5 seconds (aircraft in on ground with parking brake ON).

Pushing the erase button for 2 seconds (aircraft on ground or in flight).

Pushing the erase button for 2 seconds

Pushing the erase button for 2 seconds (aircraft in on ground with parking brake ON).

Correct! Wrong!

The ERASE switch is red. It will erase all four channels.

When the ALTN ORM switch on the Audio Control Panel (ACP) is set to ALT:

The ACP at that station is inoperative and the crewmember cannot communicate on any radios.

The ACP at that station is inoperative but the crewmember can communicate on one radio.

The ACP at that station is still operative but in degraded mode.

The ACP switches to standby ACP and all functions operate normally except PA and interphone.

Correct! Wrong!

Flight Attendants may be called from the flight deck, the other attendant station, or from any passenger seat or lavatory. Master call lights in the passenger cabin identify the source of incoming calls to the attendants.

True.

False.

Correct! Wrong!

What is the purpose of the ALT-NORM switch on the Audio Control Panel?

It selects an alternate radio.

It swaps audio control panels with the observer.

It selects a degraded mode of operation of the ACP.

Correct! Wrong!

When an HF transmitter is keyed after a frequency change, the antenna tunes. A steady or intermittent tone may be heard through the audio system. While tuning, the tone can last as long as 7 seconds. If the system fails to tune:

The tone will last more than 7 seconds, to a maximum of 30 seconds.

The tone will last more than 7 seconds, to a maximum of 15 seconds.

The tone will last more than 7 seconds.

The tone will not be heard

Correct! Wrong!

The antenna is located in the vertical stabilizer.

On the Audio Control panel (ACP) the Cabin call light comes ON. It will illuminate until:

Remains illuminated for 40 seconds.

Remains illuminated for 30 seconds.

Remains illuminated for 10 seconds.

Remains illuminated for 20 seconds.

Correct! Wrong!

Cockpit Voice Recorder - When the TEST switch is pushed for _____:

2 seconds the green STATUS light flashes once and a tone may be heard through a headset plugged into HEADPHONE jack.

5 seconds the green STATUS light flashes once and a tone may be heard through a headset plugged into HEADPHONE jack.

5 seconds the red STATUS light flashes once and a tone may be heard through a headset plugged into HEADPHONE jack.

2 seconds the red STATUS light flashes once and a tone may be heard through a headset plugged into HEADPHONE jack.

Correct! Wrong!

Boeing 737 MAX - Communications

Quiz

Boeing B737 MAX - Communications

The Cockpit Voice Recorder in AUTO:

In the degraded mode of operation, are the ACP transmitter selectors functional?

When is the Cockpit Voice Recorder active?

The MASK-BOOM switch allows selection of the oxygen mask microphone or the boom microphone. The MASK-BOOM switch affects the operation of the hand microphone.

In case of degraded audio system operation:

With the Captain's ACP operating in degraded mode, at that station:

If the VOICE RECORDER Switch is selected to ON:

The cockpit voice recorder uses four independent channels to record flight deck audio for _____

The VHF 1 antenna is located on the lower fuselage and VHF 2 is on the upper fuselage.

How are the communication systems controlled?

The Cockpit Voice Recorder (CVR) can be erased by:

When the ALTN ORM switch on the Audio Control Panel (ACP) is set to ALT:

Flight Attendants may be called from the flight deck, the other attendant station, or from any passenger seat or lavatory. Master call lights in the passenger cabin identify the source of incoming calls to the attendants.

What is the purpose of the ALT-NORM switch on the Audio Control Panel?

When an HF transmitter is keyed after a frequency change, the antenna tunes. A steady or intermittent tone may be heard through the audio system. While tuning, the tone can last as long as 7 seconds. If the system fails to tune:

On the Audio Control panel (ACP) the Cabin call light comes ON. It will illuminate until:

Cockpit Voice Recorder - When the TEST switch is pushed for _____: