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Com/ NAV systems

Airframe written

QuestionAnswer
An emergency locator transmitter (ELT) is normally activated by an inertial switch or equivalent mechanism if subjected to a force of a prescribed intensity and duration. It must activate when the force is applied parallel to the longitudinal axis of the aircraft
VHF radio signals are commonly used in both VOR navigation and ATC commuications
In general, the purpose of an aircraft transponder is to receive and interrogation signal from a ground station and automatically send a reply back
Part of the ADF system used on aircraft includes sense and loop antennas
One antenna can be used for the radio range and standard broadcast bands in light aircraft because the two ranges are close together
When must the emergency locator transmitter (ELT) battery be replaced (other than reading the replacement date)? When the transmitter has been in use for more than one cumulative hour
Doublers are used when antennas are installed to reinstate the structural strength of the aircraft skin
In an autopilot, which signal nullifies the input signal to the ailerons? Follow-up signal
Static dischargers help eliminate radio interference by dissipating static electricity into the atmosphere at low current levels
The purpose of a localizer is to align the airplane with the center of the runway
A gasket or sealant is used between the antenna mast and fuselage skin to prevent the entry of moisture
The addition of avionics and associated antenna systems forward of the CG limit will affect empty weight and useful load
How may the operation of an installed emergency locator transmitter (ELT) be verified during aircraft inspection? By tuning a communications receiver to the civil emergency frequency and activating the ELT momentarily within five minutes after the hour.
A DME antenna should be installed on the aircraft in a position that will not to be blanked out by the wing when the aircraft is banked
When must the radio station license be displayed in an aircraft equipped with a two-way radio? When the aircraft is operated outside the United States
After an automatic direction finding antenna has been installed, the loop must be calibrated
When bending coaxial cable, the bend radius should be at least 10 times the diameter of the cable
In the landing configuration GPWS typically monitors the radio (radar) altimeter, air data computer, instrument landing system, and landing gear and flap position
Created by: mattpayne001
 

 



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