11.5.3 Nav Flashcards
How many satalites for 3 nav
4
How do we get signals from ground base radio stations
From bearing or distance from the beacon
What is automatic direction finding used for
Determine relative bearing of aircraft to ground station
ADF frequency
190-1750Khz
What is the relative bearing
Bearing angle between aircraft’s nose and ground station
How is relative bearing measured
Clockwise from heading
ADF also know as
Non-directional beacon
What 2 things is adf used for
En router nav
Position fixing and holding
What type of antennae is the ADF antennae
Combined loop/sense
2 types of ADF antennae
Omni-directional sense antenna
Directional loop antenna
What does dme measure
Slant angle
Dme frequency
399.9Nms
What is shown if there’s invalid information/none
4 dashes
What is the ils used for
Manual and automatic precision landing
Automatic landing in category 3
2 parts of ILS
Localiser
Marker beacon
Where is the ils antennae located
Inside the raydome
Why don’t we tune the marker beacon
They all have the same frequency 75Mhz
Outer marker colour
Blue
Middle maker colour
Amber
Inner marker colour
White
Primary reason for radar
Deflects and tracks objects in airspace
What principle does radar work on
Radio wave detection
Secondary purpose of radar
Identifying and tracking aircraft
What are adirus used for and what pressure do they give measurements from
Bellows and they use barometric pressure
What is mode a
4 digit 0-7
What is mode C
4 digit code and barometric altitude
What is mode S linked to
Linked to TCAS
Air traffic control L band send and reply frequency
Send 1030 MHZ
Reply 1090 MHZ
Emergency codes
7500 , 7600 , 7700
How many bit addresses does tcas modes send
24 per second
What indications does tcas use
VSI
What zones do EADI have
Fly out zones for resolution advisory which is red
Low range rad alts are what height
0-2500ft
What does low range rad alt do
Indicate decision height or minimum decision height
What does low range rad alt do
Indicate decision height or minimum decision height
What are the radio altimeters located and how many
2 which are mounted on belly of the aircraft
Where is the master control for gps located in what us state
Colorado
How many satalites are in orbit
30
What system does gps use
Dual system
What is the gps antennae impedance
50 ohms
How often do we update the fms
Every 28 days
Where do we get info for the fms
Via the mcdu
What does engine pressure ratio indicate
Thrust
What 3 flight instruments use static pressure
ALT
ASI
VSI
What is the purpose of the ground proximity warning system
Alert crew of unsafe condition or new terrain
What does the ewps do
Maps terrain
Gwps range and modes
30ft-2450ft
1-6 modes
In ewps what is mode 7 used for
Specific aircraft types
When does adiru battery light come on
When aircraft is on ground only power source for the adiru is the hot battery bus
When does adiru enters the auto nav realign mode
If adiru in nav mode don’t move in 6-15m
Lateral axis letter
X
Longitudinal axis letter
Y
Longitudinal axis letter
Y
Vertical axis letter
Y
Ins/irs intergration
1 - speed
2 - distance
