Communication and Navigation Systems Flashcards
What are three basic autopilot components?
Gyros, Servos, Flight Controller, Computer and Amplifier
What are the sensing elements of an autopilot system?
A directional gyro, turn and bank gyro, attitude gyro, and altitude control
What are the actuating elements of an autopilot system
Servos that operate the control surfaces
What is the most common communication system in use?
VHF Systems
How often does the ATC transponder require recertification?
Every 24 months
What are the components of a typical airborne VOR system?
A receiver,
visual indicator,
frequency selector,
antennas,
power supply
Why are two antennas or a single multi-element antenna usually required for an ILS system?
One for the localizer, and one for the glide slope receivers
What information does a glide slope radio beam provide?
Vertical guidance for correct angle of descent
What is a DME? (Not Marshall)
Distance Measuring Equipment
What is VOR equipment used for?
Navigation
Where should DME antennas be located?
On the lower surface of the aircraft fuselage, centerline
What is one method used to monitor the output signal during an ELT test?
A VHF radio tuned to 121.5 MHz
What powers an emergency locator transmitter (ELT) ?
A self contained battery
What is an ADF?
Automatic direction finder
How may a mechanic determine to replace or recharge the batteries in an ELT even though the set operates?
It is marked on the outside of the transmitter and entered in the aircraft maintenance records
