Navigation Flashcards
The IRS display unit is located on the ____.
radio Aft Overhead Panel
radio Aft Electronics Panel
radio Center Instrument Panel
radio Captain`s Side Panel
Aft Overhead Panel
How long does a full IRS alignment take?
radio Approximately 10 minutes
radio From 5-17 minutes depending on latitude.
radio Approximately 15 minutes
radio Approximately 5 minutes
From 5-17 minutes depending on latitude.
A steady white ALIGN light on the IRS Display Unit means ____.
radio alignment is progressing normally
radio an alignment fault is detected
radio the present position is inaccurate
radio the system is fully aligned
alignment is progressing normally
A flashing white ALIGN light means ____.
radio no present position entered
radio unreasonable present position entry
radio both 1 and 2 are correct
radio alignment complete, ready for NAV
both 1 and 2 are correct
How long can the Right IRS operate without AC electrical power?
radio 30 seconds
radio 30 minutes
radio 5 minutes
radio 5 seconds
5 minutes
If the amber FAULT light illuminates on the IRS Display Unit, it indicates the ____.
radio airspeed has exceeded the Vmo/Mmo
radio ADIRU is in a self-test mode
radio related IRS system has detected a fault
radio IRS has switched to ATTITUDE automatically
related IRS system has detected a fault
The VOR course is set on the ____.
radio FWD Overhead Panel
radio Aft Electronics Panel
radio EFIS Control Panel
radio Mode Control Panel
Mode Control Panel
The VOR identification is displayed on the ____.
radio PFD
radio VHF Navigation Control Panel
radio Navigation Display
radio on-side FMC
Navigation Display
The right VOR information can be displayed and flown on the left ND by changing the ____.
radio AUX NAV Switch on the Aft Overhead Panel
radio IRS Switch on the FWD Overhead Panel
radio VHF NAV Transfer Switch on the FWD Overhead Panel
radio VOR Standby Switch on the Aft Electonics Panel
VHF NAV Transfer Switch on the FWD Overhead Panel
DME frequencies are normally _____ tuned by the _____ as necessary for aircraft position updating.
radio automatically/FMC
radio automatically/GPS
radio manually/pilot
radio manually/VOR
automatically/FMC
____ ILS receiver(s) is/are installed on the B737.
radio 1
radio 2
radio 3
radio 4
2
ILS course and glidepath are displayed on the pilots PFDs and ____.
radio Nav Display in MAP mode
radio Standby Attitude Indicator
radio Upper Multi-Function Display
radio Lower Multi-Function Display
Standby Attitude Indicator
Marker beacon information is displayed on ____.
radio both the PFD and ND
radio the PFD or ND
radio the ND only
radio the PFD only
the PFD only
____ GPS receivers are installed in the B737.
radio 1
radio 2
radio 3
radio 4
2
GPS provides position updates to the ____ and other aircraft systems.
radio VOR
radio ILS
radio IRS
radio FMC
FMC
The right (IRS #2) ON DC light has illuminated. What is a possible cause?
radio AC Main Bus 1 has failed.
radio The left IRS is being powered by the DC Standby Bus.
radio The right IRS is being powered by the switched hot battery bus.
radio Alignment has been lost.
The right IRS is being powered by the switched hot battery bus.
The aircraft is at the gate, and has been using external power. External power is disconnected. This light appears, along with a Master Caution, IRS annunciator light, and a horn in the nose wheel well. What is the purpose of the wheel well horn?
radio It indicates that battery power is running low.
radio It indicates that the right IRS is no longer powered.
radio It alerts ground personnel that the IRS is on battery power.
radio It is a warning that both IRS are about to fail.
It alerts ground personnel that the IRS is on battery power.
In this situation, the indication occurs in flight. Assuming no corrective action is available, which statement about the operation of each IRS is correct?
radio The right IRS will operate for 30 minutes and the left IRS will shut down in 5 minutes.
radio The left IRS is inoperative. The right IRS is operating on battery power.
radio The left IRS will operate on battery power once the right IRS shuts down after 5 minutes.
radio The left IRS is operating normally. The right IRS will shut down in 5 minutes.
The left IRS is operating normally. The right IRS will shut down in 5 minutes.
In flight, the Master Caution Lights and the IRS Annunciation Light illuminate. The indications above also occur which means that the ____.
radio Battery Bus has failed since it is the DC power source for the left IRS
radio left IRS should continue to operate for 5 minutes and then fail
radio left IRS has failed and the unit is inoperative
radio DC power source for the left IRS is not normal but the left IRS is still powered by the AC Standby Bus
DC power source for the left IRS is not normal but the left IRS is still powered by the AC Standby Bus
Assuming no other IRS lights are illuminated, normal IRS operation can be restored by ____.
radio no action is required. The IRS is operating normally
radio moving the left IRS Mode Selector to ALIGN and then back to NAV after 30 seconds
radio no action is possible. The left IRS will fail after 5 minutes
radio moving the left IRS Mode Selector to ATT and update the aircraft heading in line 5R in POS INIT Page 1/3 of the CDU
no action is required. The IRS is operating normally
340,3,2
If the IRS Selector is placed in ATT Mode, what information is no longer calculated by the FMS?
radio Acceleration, vertical speed, ground speed, track, position, heading and winds.
radio Position, acceleration and deceleration speeds.
radio Position, ground speed, track, or winds.
radio None of the statements are correct.
Acceleration, vertical speed, ground speed, track, position, heading and winds.
In 3RH – 3VM, in-flight loss of alignment due to power interruption or inadvertent shut down requires the pilot to__.
radio Do nothing. The GPS receivers will provide attitude reference information
radio None of the statements are correct
radio Do nothing. When power is restored, attitude reference information is restored after approximately 30 seconds due to AIM (Align In Motion) capability
radio Use the ISFD. Primary attitude reference information is lost
Do nothing. When power is restored, attitude reference information is restored after approximately 30 seconds due to AIM (Align In Motion) capability
With this indication in flight, with a 3DM airplane, what options do you have? ____________.
radio Reset MASTER CAUTION and wait 30 seconds for an IRS inflight restart.
radio Partial capability may be restored by selecting ATT mode on the FO’’s IRU.
radio Position the IRS Transfer switch to BOTH ON L.
radio Position the IRS Transfer switch to BOTH ON R. Autopilot will not be available for use on approach.
Position the IRS Transfer switch to BOTH ON R. Autopilot will not be available for use on approach.
What should you conclude from these indications while the aircraft is at the gate?
radio The left IRS is not affected by this failure, however backup DC power has failed.
radio The right IRS has failed after being powered by the Switched Hot Battery Bus for more than 10 minutes.
radio The left IRS is being powered by the Switched Hot Battery Bus.
radio The left IRS will fail in five minutes.
The left IRS is being powered by the Switched Hot Battery Bus.
While still at the gate you confirm that external power is connected. What additional conclusion can be made based on the indications shown?
radio The ground-call horn in the nose wheel well will not activate since normal AC power is on the busses.
radio AC power to the left IRS has failed.
radio The right IRS is unpowered.
radio The left IRS is powered by the AC Standby Bus.
The right IRS is unpowered.
When an aircraft is parked at the gate, when else might you see this indication?
radio The Battery Switch is OFF
radio This is a normal momentary indication during an IRS alignment self-test
radio The STANDBY POWER Switch is in BAT
radio The ELEC Light is also illuminated due to a fault in the DC power system
This is a normal momentary indication during an IRS alignment self-test
