MOD 13-14-15 Flashcards
What best describes the operation of an ELT in an aircraft?
It activates automatically in the event of a crash
On what frequencies do a 3-frequency ELT transmit?
121.500 MHz, 243.0 MHz and 406 MHz
What is the primary source of power for an aircraft ELT?
The ELT has its own dedicated battery
In what format is the information transmitted on the 121.500 MHz and 243.0 MHz frequencies?
Analog signal, consisting of a sweeping audio tone
When testing an ELT in the aircraft, what frequency is used to monitor the ELT transmission?
121.500 MHz
What is the proper time of day to test the ELT?
Within the first 5 minutes of any UTC hour
COSPAS/SARSAT is the satellite system operated by Russia and the USA.
YES
NOAA is the U.S. government agency that operates the COSPAS/SARSAT system.
YES
A remote switch is NOT required on a 406 MHz ELT.
true or false
false
What is the maximum recording time for an aircraft CVR?
Either 30 minutes or 120 minutes
What is the normal number of channels of audio that an aircraft CVR records?
4 channels
What best describes the operation of a āGā switch in an aircraft CVR installation?
It removes power from the CVR in the event of a crash
Which of the following statements best describes the functions of an aircraft CVR?
To record sounds from the aircraft cockpit and protect the recording
What is the common name of the CVR test that must be performed, as per the CARs, to determine that the CVR is recording useable audio?
A CVR intelligibility test
What is the purpose of an FDR correlation test?
To ensure all FDR parameters are being recorded and are usable
How often must an FDR correlation test be performed, as per the CARs?
Every 12 months or 3000 flight hours, whichever occurs first
What is the primary purpose of the ULB/ULD installed on an FDR or CVR?
To enable investigators to find the FDR or CVR if the aircraft lands in water
What best describes a Health and Usage Monitoring System (HUMS)?
Records data, similar to an FDR, for use in maintenance and reliability tracking
Which are the advantage of SATCOM as it compares to aircraft HF?
1) SATCOM utilizes direct/space wave methods of propagation
2) SATCOM is not as succeptable to iterference from changes in the ionosphere
3) SATCOM provides a means for communication in remote areas and trans-oceanic flights
Which ones are satellite communications service providers?
Iridium, Globalstar and Inmarsat
Which of the following is NOT a frequency range for SATCOM?
1) 2.0 MHz to 30.0 MHz
2) 1.616 GHz to 1.6265 GHz
3) 27.5 GHZ to 31 GHz
4) 19.4 GHz to 29.3 GHz
1)2.0 MHz to 30.0 MHz
Which of the following components is NOT typically used in a SATCOM system?
1) Automatic Antenna Coupler
2) High Power Amplifiers
3) Demultiplexers
4) Beam Steering Networks
1) Automatic Antenna Coupler
Where on the aircraft are the antenna(s) for the SATCOM system located?
On the upper surface of the aircraft fuselage
