Navigation Flashcards
How is the AHARS information displayed?
It goes through the IC-600 to the PFD and MFD
How many AHARS computers are there?
2
What systems are in the AHARS system?
Attitude and heading computer
Magnetic flux detector
Memory module
How does the AHC work?
3 accelerometers measure aircraft movement on the horizontal vertical and lateral access
How does the MFDU work?
It senses the horizontal component of the earths magnetic field.
What does the memory module do?
It stores the AHC information.
What is the differences between AHRS 800 and 900?
The 900 has 2 Attitude and heading reference unit instead of an attitude and heading computer. Both located in the forward electric compartment.
What is in the AHRU?
3 laser gyroscopes
3 accelerometers
How does IRS units differ from AHRS?
IRS units use inertial reference units in the forward electronics compartments
What is in the IRU?
3 ring laser gyroscope
3 accelerometers
How man satellites does GPS need to determine position?
4 satellites
EGPWS provides alert and warnings at what times?
Caution - 60 seconds
Warning - 30 seconds
What do the colors mean for terrain clearance?
Red - 2,000' above aircraft Bright yellow - 1,000 to 2,000 above Yellow - -250 to 1,000 above Bright green -250 to -1,000 below Green - -1,000 to -2,000 below
What is the maximum distance TCAS will pick up an aircraft?
100nm
What are the times for TCAS caution and warnings?
Caution - 35 to 45 seconds
Warning -20 to 30 seconds
What are the altitude ranges for above below normal and manual modes?
Above - 7,000 to -2,700
Below - 2,700 to -7,000
Normal - 1,200 to -1,200
Manual - 2,700 to -2,700
What is the range of target mode for the weather radar?
7.5 degrees from 100 to 300nm away.
What are the obstacle caution and warning times?
Caution - 45 seconds
Warning - 30 seconds
When are TA’s and RA’s inhibited?
TA - below 500’ AGL
Descending RA - below 1000’ descent and below 1200’ climb
ALL RA - below 400’ descent and 600’ climb
When does EGPWS produce “Bank Angle”?
GPWS - 10 at 30’ to 40 at 150’
EGPWS - 10 at 30’ to 40 at 150’ to 55 up to 2450’
Roll rate above 1 degree per second
Windshear escape guidance prevents what?
Stalling
Descending
Exceeding Vmo
When does Windshear escape guidance mode automatically engage?
Go around button press in Windshear.
Go around and Takeoff when Windshear is detected.
Thrust lever in the detent and Windshear is detected.
When is Windshear escape guidance cancelled?
Any verticals mode selected
Invalid data- AHRS ADC SPS
Above 1500’
EICAS inhibition logic- takeoff phase.
Activated: v1 - 15kts
Deactivated: 400’, below 60kts, 1 minute
EICAS inhibition logic landing phase.
Activated: 200’
Deactivated: WOW +3 seconds, 1 minute
What are the 3 built in tests for the IC-600?
Power up
Continuous
Pilot initiated
How many EICAS messages can be displayed on the front page?
15
What will trigger a takeoff configuration warning?
Flaps
Parking break
Pitch trim
Spoiler
When will the SPS stick pusher not actuate?
On the ground Below -.5g Quick disconnect button pressed Below 200'AGL Above 200kts One channel inop Cutout buttons released
What are the degrees and color of the pitch limit indicator?
Green 5-10 degrees
Amber 2-5 degrees
Red below 2 degrees
When are the obstacle caution and warnings?
Caution 45 seconds
Warning 30 seconds
At what altitude will TCAS not give a CLIMB RA?
36,000’
