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20 Cards in this Set
- Front
- Back
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What are the basic components of a radio communication system? |
A microphone, transmitter, transmitting and receiving antennas, receiver, and speaker or headphones |
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What frequency range is used by most modern voice communication systems? |
The very high frequency band (118.0-136.975) |
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What does the term ADF stand for? |
Airborne direction finding |
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What is the function of VOR equipment? |
Navigation |
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Name the components of a typical airborne VOR navigation system |
The receiver, antennas, frequency selector and visual display indicator |
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What does DME stand for? |
Distance measuring equipment |
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At what interval must an ATC transponder system be certified? |
Every 24 calendar months |
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Where are two antennas usually required for an ILS system? |
The localizer and glideslope signals are transmitted on different frequencies |
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What information does the glideslope beam provide? |
Vertical guidance to enable the aircraft to maintain the correct descent angle |
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What is the power source for an ELT? |
An internal battery |
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Describe one method of monitoring the signal output during an ELT test? |
Tuna communications receiver to 121.5 megahertz |
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How would you determine if the batteries in an ELT are due for a recharge or replacement? |
I looking for an expiration date for recharge or replacement on the battery and/or in the aircraft maintenance records |
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At what time is a test of an installed ELT permitted? |
During the first 5 minutes after the hour and no more than 3 sweeps |
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Where on the aircraft would you expect to find a DME antenna? |
Generally on the bottom of the fuselage in a location that isn't blocked by the wing during turns |
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Describe the shape and location of a transponder antenna |
Either a short blade or a short wire with a ball end located on the bottom of the fuselage |
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Name the basic components of an autopilot system |
Gyros, servos, a controller, and an amplifier or computer |
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What are the sensing elements of an autopilot system? |
Altitude, directional, and turning gyros, and an altitude sensor |
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What is the function of the servos in an autopilot system? |
Servos actuate the flight controls |
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What is the purpose of a bonding jumper from a radio shock mount to the airframe? |
To provide a low impedance ground return |
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Describe the procedure used to Route coaxial cable from an antenna to a receiver |
the cable should be supported every two feet, bends should be 10 times the cable diameter, and it should be routed separately from other wires |
