Unit 4 Flashcards
What provides information and guidance for aircraft landing even in adverse weather. This utilizes three separate receivers to process the signal from three ILS ground transmitters
Instrument Landing System (ILS)
This system provides the VHF receiver with signals that determine left/right deviation relative to the runway centerline
Tone localizer (LOC)
What radio frequency does the tone localizer use and its frequency range
VHF 108.10 - 111.95 MHz (Odd 1/10 MHz)
How many channels are for Tone Localizer
40
What is used in conjunction with the Terminal VOR
Tone Localizer (LOC)
What is the operating principle of the Tone Localizer
Amplitude Comparison (90 Hz and 150 Hz)
What provides up/down deviation and is paired with the LOC channels
Glide Slope
What is the operating principle of Glide Slope
Amplitude Comparison (90 Hz and 150 Hz)
What provides light and audible indications and shows the distance from end of runway
Marker Beacon (MB)
What are the 3 MB and characteristics
Outer - 4 to 7 Miles from EOR, Blue light, 400 Hz
Middle - 3500 ft, Amber light, 1300 Hz
Inner - 1000 ft, White light, 3500 Hz
What is the transmit frequency of the Marker Beacon (MB)
75 MHz
What component of the ILS sets the localizer channel
Control Panel
What component of the ILS is in which the selected frequency determines activated portion of the receiver
Receiver
What shares an antenna on the stabilizer
VOR/LOC
What has separate antennas
Glide Slope and Marker Beacon
Where is the Glide Slope beacon antenna
Inside the nose/lower bulkhead
Where is the Marker Beacon antenna
Flush mounted on bottom of A/C
What is the primary indicator of the ILS
ADI
What does the ADI Display
Glide Slope Deviation
Bank Steering Bar
Pitch Steering Bar
How much is each dot in the Pitch Steering Bar of the ADI
0.3°
What does the HSI display
Course Deviation Bar (Localizer)
How much is each dot in the HSI
1.25°
Where will the bearing needle on the HSI park
90°
Where will the light signal go through before reaching the MB
Radio Junction Box
Where will the sound signal go through before reaching the interphone
Interphone Junction Box
