Comm_Nav

What is the purpose of the ALT / NORM switch on the Audio Control Panel (ACP) ?
1. The ALT/NORM switch allows switching to the standby ACP.
2. The ACP will operate in degraded mode with the switch in ALT.
3. The ALT/NORM switch transfers control between the Captain's and First Officer's ACP.
4. The ALT/NORM switch allows switching between the alternate and normal VHF amplifiers.
Which VHF radios will operate if the ALT/NORM switch on the Audio Control Panel (ACP) is in ALT ?
1. VHF 1 only from the Captain's and First Officer's ACP.
2. VHF 1 on the Captain's ACP and VHF 2 on the First Officer's ACP.
3. All VHF Comm radios operate normally including the observers ACP.
Which receiver switches will operate if the ALT/NORM switch is in ALT on an Audio Control Panel (ACP) ?
1. VHF-1 for the respective ACP
2. VHF1 or VHF 2 for the respective ACP.
3. All receiver switches operate normally including volume control.
4. None of the receiver switches are operational for the respective ACP.
Which statement is true if the ALT/NORM switch on an Audio Control Panel (ACP) is in ALT ?
1. The hand microphone, mask and boom microphone and PA handset/microphone are usable from that ACP.
2. The mask and boom microphone and PA handset/microphone are usable from that ACP.
3. Only the hand microphone is usable from that ACP.
4. None of the microphones are usable.
Which statement is true if the ALT/NORM switch on an Audio Control Panel (ACP) is in ALT ?
1. The respective VHF Comm may be heard on the headset at a pre set volume.
2. The operating VHF Comm, NAV and GPWS/Windshear warnings may be heard on the headset at a pre set volume.
3. Only the speaker for that ACP is operational and the headset is inoperative.
4. The operating VHF Comm and interphone may be heard on the headset at a pre set volume.
If the Service Interphone switch on the AFT Overhead Panel is OFF, which answer is correct ?
1. Communication between the cabin and flight deck is deactivated.
2. Communication between the flight deck and ground crew is deactivated.
3. Communication between the cabin, flight deck and ground crew is deactivated.
Which statement is true regarding the Flight Recorder.
1. The Flight Recorder operates anytime electrical power is available.
2. The Flight Recorder operates anytime electrical power is available and when either engine is running on the ground.
3. The Flight Recorder operates anytime an engine is running.
4. The Flight Recorder operates when the Air / Ground logic senses that the aircraft is airborne.
Which statement is true regarding the Flight Recorder test function ?
1. The test position powers the Flight Recorder on the ground and the OFF light extinguishes.
2. The test position checks the Flight Recorder circuit and the OFF light extinguishes.
3. The test position checks the Flight Recorder circuit and the OFF light extinguishes for 2 seconds.
Except for the standby instruments, what is the sole source of aircraft heading and attitude information ?
1. The Inertial Reference Systems (IRS).
2. The Air Data Inertial Reference Units (ADIRU).
3. The Global Positioning System (GPS).
What is the normal AC power source for the left IRS ?
1. The AC Standby Bus.
2. Transfer Bus 1.
3. Transfer Bus 2.
4. Main Bus 1.
What is the normal AC power source for the right IRS ?
1. The AC Standby Bus.
2. Transfer Bus 1.
3. Transfer Bus 2.
4. Main Bus 2.
What is the backup power source for both IRS units ?
1. The DC Standby Bus.
2. The Switched Hot Battery Bus.
3. The Hot Battery Bus.
4. DC Bus 1.
If both IRS's are operating from DC power and AC power is not restored to the IRS units, which statement is true ?
1. Both IRS's will shut down after five minutes.
2. The right IRS will shut down after five minutes.
3. The left IRS will shut down after five minutes.
Which statement is true with regard to the TEST function of the IRS Display Unit (ISDU) ?
1. The test should only be performed after alignment is complete.
2. The test should only be performed during alignment.
3. The test should only be performed when both IRS units are OFF.
4. The test may be performed at any time.
When using the DSP SEL switch on the IRS Display UNIT (ISDU) to check WIND, TK and HDG, direction is displayed in ?
1. Magnetic.
2. True.
The normal IRS alignment cycle will take ?
1. 15 minutes.
2. Between 1 and 5 minutes.
3. Between 5 and 17 minutes.
4. 30 to 45 seconds.
What determines the time required for a normal IRS alignment ?
1. The aircraft's latitude.
2. The aircrafts present position relative to the last stored position.
3. The aircraft's longitude.
4. The magnetic variation at the aircraft's present position.
When switching the IRS Mode Selector from OFF to NAV, the ON DC light illuminates and then extinguishes. This indicates ?
1. A normal power test if the ON DC light extinguishes and the ALIGN light illuminates.
2. The respective IRS is operating on DC power only if the ON DC light extinguishes and the ALIGN light illuminates.
3. AC power is not available to the IRS and must be applied within 5 minutes or the IRS will shut down.
If the ON DC light is illuminated, what other indication(s) will the crew have that an IRS is operating on DC power ?
1. The Master Caution light, IRS annunciator and crew call horn in the nose wheel well.
2. The crew call horn in the nose wheel well sounds.
3. The Master Caution light and IRS annunciator.
4. The Master Caution light and OVERHEAD annunciator.
What is indicated by the DC FAIL light illuminated on the IRS Mode Selector Unit ?
1. DC power for the respective IRS is not normal. The IRS will operate on AC power only.
2. DC power for the respective IRS is not normal. The IRS will shut down.
3. DC power for the respective IRS is not normal. The IRS will operate on AC power only for 5 minutes and then shut down.
If an inaccurate position is entered in the FMC to start the IRS alignment process
1. both ALIGN lights flash until the correct position is re-entered.
2. the FAULT light illuminates.
3. the ALIGN lights will not illuminate until the correct position is entered.
4. both ALIGN lights will flash and then extinguish.
How much time is required for fast realignment of the IRS ?
1. 30 seconds.
2. 45 seconds.
3. 60 seconds.
4. Up to 120 seconds.
How can remaining alignment time be determined during normal IRS alignment ?
1. Selecting HDG / STS on the IRS Display Unit (ISDU) DISPL SEL switch.
2. The FMC POS INIT page.
3. The FMC POS REF page.
4. Selecting PPOS on the IRS Display Unit (ISDU) DISPL SEL switch.
What does the FMC message VERIFY POSITION indicate ?
1. The position entered for IRS alignment is not within 4 NM of the origin airport.
2. The aircraft has been moved during the alignment process.
3. The computed position and FMC position do not agree after the alignment process is complete.
4. Crew scheduling is looking for you.
What does the FMC message ENTER IRS POSITION indicate ?
1. The position entered has not passed the IRS internal comparison test.
2. The position entered for IRS alignment is not within 4 NM of the origin airport.
3. The IRS is in ALIGN and no position has been entered.
4. The IRS alignment process is complete and no present position has been entered.
What is the operational limit for the IRS ?
1. Between 78 degrees 15 minutes North and 78 degrees 15 minutes South.
2. Between 82 degrees North and 82 degrees South.
3. Between 82 degrees 15 minutes North and 78 degrees 15 minutes South.
4. No operational limit exists.
If the airplane is moved during IRS alignment or fast realignment, which statement is correct.
1. The IRS automatically begins the full alignment process.
2. The Mode Selectors must be turned OFF and then to ALIGN to begin a new alignment.
3. The position must be re-entered and a new alignment process started.
4. Both ALIGN lights flash and the FAULT light illuminates.
What is indicated if the GPS light is illuminated.
1. One of the two GPS sensors has failed.
2. Both GPS sensors have failed.
3. Both GPS sensors are not receiving a GPS signal.
4. GPS and IRS position are in disagreement by more than 0.5 NM.
What information is available to the using units with the IRS Mode Selector switch in the ATT position ?
1. Attitude information.
2. Attitude and position information.
3. Attitude and heading information.
4. Attitude and ground speed information.
If the Mode Selector on the IRS Mode Selector Unit is moved from NAV to ATT while performing an initial alignment, which statement is correct ?
1. The Mode Selector must be moved to OFF before re-selecting ALIGN or NAV and the alignment must be performed again.
2. The alignment will continue without interruption by moving the Mode Selector back to ALIGN.
3. The alignment will continue without interruption by moving the Mode Selector back to ALIGN and re-entering the present position.
4. The Mode Selector must be moved back to ALIGN and then NAV when the ALIGN light is extinguished.
If the left IRS is lost, which statement is correct ?
1. Switching to the IRS switch from NORMAL to the BOTH ON R position on the Navigation and Displays Source Panel will provide attitude and heading information to the Captain's instruments.
2. Attitude and heading information will automatically shift to the operating IRS for the Captain's instruments.
3. Attitude and heading information is lost for the Captain's instruments.
4. Attitude and heading information will automatically shift to the left GPS.
If the FMC switch on the Navigation and Displays Source Panel is moved from NORMAL to either BOTH ON L or BOTH ON R, which statement is correct ?
1. If LNAV and VNAV are engaged, both will disengage.
2. If LNAV and VNAV are engaged, LNAV will disengage.
3. If LNAV and VNAV are engaged, VNAV will disengage.
4. Entry of data is no longer possible on the CDU which has been de-selected. LNAV or VNAV will not engage.
What is the function of the CONTROL PANEL switch on the Navigation and Displays Source Panel ?
1. Determines which EFIS control panel control's the pilot's display functions.
2. Determines which FMC CDU accepts input for the FMC.
3. Determines which Display Electronic Unit (DEU) provides input for all six display units.
What is the function of the SOURCE switch on the Navigation and Displays Source Panel ?
1. Determines which EFIS control panel control's the pilot's display functions.
2. Determines which Display Electronic Unit (DEU) provides input for all six display units.
3. Determines which FMC CDU accepts input for the FMC.
4. Determines which IRS provides attitude and heading information to the pilot's instruments.

Communications and Navigation