AVIONICS FOR B1 BOEING 777 MT
EXAM QUESTIONS WITH COMPLETE
ANSWERS
How is the antenna system of an HF radio different from a VHF radio? - ANSWER-
Couplers are in the antenna circuit to match the impedance of the HF antenna to the
frequency used. The couplers are installed near the HF antenna in the vertical
stabilizer.
Which Very High Frequency (VHF) and High Frequency (HF) radios can be tuned
from the left Radio Tuning Panel (RTP)? - ANSWER-Left, center or right VHF and
left and right HF.
Which transmitters can be used by the Aircraft Communications Addressing And
Reporting System (ACARS)? - ANSWER-Center VHF and SATCOM. When active in
OPC also Right VHF, but not for KLM.
What are the conditions to allow an erase of the Cockpit Voice Recorder (CVR)? -
ANSWER-Ground mode relay 'On Ground' and the Parking brake relay 'Brake on'.
How many Satellite Communications (SATCOM) channels are available for use? -
ANSWER-Seven. One data and six voice channels.
Where are the ADMs and the SADMs located? - ANSWER-Near the pitot probes and
in the ceiling of the forward cargo compartment.
What is the power supply of the ADMs and the SADMs? - ANSWER-ADMs get
power from FCDCPSA's.
SADMs get power from a power supply in the cockpit instrument panel P2.
Which Air Data Modules (ADM) require sofware after installation? - ANSWER-The
Pitot and Static ADMs
What is special about ADIRU removal and installation? - ANSWER-Use an allan key
to release or tighten a locking bar.
How can the flight interphone system be connected to the service interphone
system? - ANSWER-By means of the service interphone on/off switch on P5.
Where are the amplifiers of the service interphone system? - ANSWER-Inside the
Audio Management Unit (AMU).
Can the MIC switch on the glareshield be used for both Receive/Transmit (R/T) and
interphone functions? - ANSWER-No. Receive/Transmit (R/T) only.
How is the microphone in an oxygen mask turned on? - ANSWER-Automatically by a
switch operated by the oxygen cabinet door when the mask is removed from it.
, When you select a transmitter on an Audio Control Panel (ACP), do you also have to
push the related receiver volume control to hear the audio? - ANSWER-No. The
audio is automatically turned on when a transmitter is selected.
Which system is used to answer a call to the flight deck from the ground crew? -
ANSWER-The flight interphone.
What will be the audible and visual indications when the ground crew calls the flight
deck? - ANSWER-A chime, a 'comm' message and call light on all three Audio
Control Panels (ACP).
What will be the audible and visual indications when the flight deck calls the ground
crew? - ANSWER-A horn in the nose gear wheel well. No visual indication.
Where is the ground crew call horn located? - ANSWER-In the nose gear wheel well.
Is it possible to call the ground crew from the Cabin Attendant Handsets (CAH)? -
ANSWER-No.
Which component will deliver the Selective Calling (SELCAL) reset signal? -
ANSWER-The Audio Management Unit (AMU).
Where are the antennas for VHF radios? - ANSWER-Two on top of the fuselage.
The right VHF antenna is on the bottom of the fuselage, aft of the landing gear.
How are voice communication radios tuned? - ANSWER-Using the Radio Tuning
Panels (RTP).
What is the purpose of the 'offside tuning' light on the Radio Tuning Panels (RTP)? -
ANSWER-To indicate that two or more RTP are set to tune the same radio.
What is the purpose of the SATCOM Radio Frequency Unit (RFU)? - ANSWER-It is
an adapter only. No functionality.
What does the Cockpit Voice Recorder (CVR) record and what is its recording
capacity? - ANSWER-The Cockpit Voice Recorder (CVR) records audio from area
microphone and the Audio Management Unit (AMU). The capacity is 120 minutes (2
hours).
Where are the static ports located? Are they heated? - ANSWER-In the aircraft's
fuselage, forward of the wing. They are not heated.
What data is calculated from static and pitot pressure signals? - ANSWER-Static
pressure is mainly used to calculate altitude. Pitot pressure is basis for calculating
airspeed.
What do Air Data Modules (ADMs) and Standby Air Data Modules (SADMs) do and
how many are there on the airplane? - ANSWER-Receive pitot or static pressure and
EXAM QUESTIONS WITH COMPLETE
ANSWERS
How is the antenna system of an HF radio different from a VHF radio? - ANSWER-
Couplers are in the antenna circuit to match the impedance of the HF antenna to the
frequency used. The couplers are installed near the HF antenna in the vertical
stabilizer.
Which Very High Frequency (VHF) and High Frequency (HF) radios can be tuned
from the left Radio Tuning Panel (RTP)? - ANSWER-Left, center or right VHF and
left and right HF.
Which transmitters can be used by the Aircraft Communications Addressing And
Reporting System (ACARS)? - ANSWER-Center VHF and SATCOM. When active in
OPC also Right VHF, but not for KLM.
What are the conditions to allow an erase of the Cockpit Voice Recorder (CVR)? -
ANSWER-Ground mode relay 'On Ground' and the Parking brake relay 'Brake on'.
How many Satellite Communications (SATCOM) channels are available for use? -
ANSWER-Seven. One data and six voice channels.
Where are the ADMs and the SADMs located? - ANSWER-Near the pitot probes and
in the ceiling of the forward cargo compartment.
What is the power supply of the ADMs and the SADMs? - ANSWER-ADMs get
power from FCDCPSA's.
SADMs get power from a power supply in the cockpit instrument panel P2.
Which Air Data Modules (ADM) require sofware after installation? - ANSWER-The
Pitot and Static ADMs
What is special about ADIRU removal and installation? - ANSWER-Use an allan key
to release or tighten a locking bar.
How can the flight interphone system be connected to the service interphone
system? - ANSWER-By means of the service interphone on/off switch on P5.
Where are the amplifiers of the service interphone system? - ANSWER-Inside the
Audio Management Unit (AMU).
Can the MIC switch on the glareshield be used for both Receive/Transmit (R/T) and
interphone functions? - ANSWER-No. Receive/Transmit (R/T) only.
How is the microphone in an oxygen mask turned on? - ANSWER-Automatically by a
switch operated by the oxygen cabinet door when the mask is removed from it.
, When you select a transmitter on an Audio Control Panel (ACP), do you also have to
push the related receiver volume control to hear the audio? - ANSWER-No. The
audio is automatically turned on when a transmitter is selected.
Which system is used to answer a call to the flight deck from the ground crew? -
ANSWER-The flight interphone.
What will be the audible and visual indications when the ground crew calls the flight
deck? - ANSWER-A chime, a 'comm' message and call light on all three Audio
Control Panels (ACP).
What will be the audible and visual indications when the flight deck calls the ground
crew? - ANSWER-A horn in the nose gear wheel well. No visual indication.
Where is the ground crew call horn located? - ANSWER-In the nose gear wheel well.
Is it possible to call the ground crew from the Cabin Attendant Handsets (CAH)? -
ANSWER-No.
Which component will deliver the Selective Calling (SELCAL) reset signal? -
ANSWER-The Audio Management Unit (AMU).
Where are the antennas for VHF radios? - ANSWER-Two on top of the fuselage.
The right VHF antenna is on the bottom of the fuselage, aft of the landing gear.
How are voice communication radios tuned? - ANSWER-Using the Radio Tuning
Panels (RTP).
What is the purpose of the 'offside tuning' light on the Radio Tuning Panels (RTP)? -
ANSWER-To indicate that two or more RTP are set to tune the same radio.
What is the purpose of the SATCOM Radio Frequency Unit (RFU)? - ANSWER-It is
an adapter only. No functionality.
What does the Cockpit Voice Recorder (CVR) record and what is its recording
capacity? - ANSWER-The Cockpit Voice Recorder (CVR) records audio from area
microphone and the Audio Management Unit (AMU). The capacity is 120 minutes (2
hours).
Where are the static ports located? Are they heated? - ANSWER-In the aircraft's
fuselage, forward of the wing. They are not heated.
What data is calculated from static and pitot pressure signals? - ANSWER-Static
pressure is mainly used to calculate altitude. Pitot pressure is basis for calculating
airspeed.
What do Air Data Modules (ADMs) and Standby Air Data Modules (SADMs) do and
how many are there on the airplane? - ANSWER-Receive pitot or static pressure and
