AVIONICS EXAM 2 2025
QUESTIONS AND ANSWERS
What is an ELT - ....ANSWER ...-Battery powered transmitter
that activates in a crash or is activated manually
What activates an ELT - ....ANSWER ...-The G-switch or
accelerometer
What is the original signal that an ELT transmits on -
....ANSWER ...-121.5MHz and 234MHz
What is the current signal that ELTs transmit on -
....ANSWER ...-121.5MHz and 406.025MHz
What is the current activation rate of ELTs - ....ANSWER ...-81-
83%
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,What information does an ELT send out when activated -
....ANSWER ...-data specific to the aircraft and owner, it is
monitored worldwide by a satellite system
Who receives the ELT data signals - ....ANSWER ...-COSPAS-
SARSAT satellite system
Who is COSPAS-SARSAT - ....ANSWER ...-Search and rescue
satellite aided tracking, they have 12 satellites and have 43 participating
countries
What are the 4 components of the ELT system - ....ANSWER ...-
ELT box, battery, remote switch and indicator, and the antenna
Where is the ELT box typically located - ....ANSWER ...-Tail
section of aircraft
How does the ELT box connect to the antenna - ....ANSWER ...-
coaxial cable
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, What information is required for the ELT box to have on the data
tag?(6) - ....ANSWER ...-Part number, serial number, manufacture
date, frequency, 15-digit HEXID, and battery part number
Is an aircraft airworthy if the battery for the ELT is past the replacement
date? - ....ANSWER ...-No
What do you have to do every time the battery is changed on an ELT? -
....ANSWER ...-Put it in the logbook and mark it clearly on the
ELT box
Where are the regulations located for ELTs - ....ANSWER ...-
14CFR Part 91.207
How long can an aircraft be operated after the ELT has been removed -
....ANSWER ...-90 days
How often should an ELT be inspected - ....ANSWER ...-12
months
What must an ELT be tested for every 12 months -
....ANSWER ...-Proper installation, battery corrosion, operation of
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
QUESTIONS AND ANSWERS
What is an ELT - ....ANSWER ...-Battery powered transmitter
that activates in a crash or is activated manually
What activates an ELT - ....ANSWER ...-The G-switch or
accelerometer
What is the original signal that an ELT transmits on -
....ANSWER ...-121.5MHz and 234MHz
What is the current signal that ELTs transmit on -
....ANSWER ...-121.5MHz and 406.025MHz
What is the current activation rate of ELTs - ....ANSWER ...-81-
83%
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 1
,What information does an ELT send out when activated -
....ANSWER ...-data specific to the aircraft and owner, it is
monitored worldwide by a satellite system
Who receives the ELT data signals - ....ANSWER ...-COSPAS-
SARSAT satellite system
Who is COSPAS-SARSAT - ....ANSWER ...-Search and rescue
satellite aided tracking, they have 12 satellites and have 43 participating
countries
What are the 4 components of the ELT system - ....ANSWER ...-
ELT box, battery, remote switch and indicator, and the antenna
Where is the ELT box typically located - ....ANSWER ...-Tail
section of aircraft
How does the ELT box connect to the antenna - ....ANSWER ...-
coaxial cable
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 2
, What information is required for the ELT box to have on the data
tag?(6) - ....ANSWER ...-Part number, serial number, manufacture
date, frequency, 15-digit HEXID, and battery part number
Is an aircraft airworthy if the battery for the ELT is past the replacement
date? - ....ANSWER ...-No
What do you have to do every time the battery is changed on an ELT? -
....ANSWER ...-Put it in the logbook and mark it clearly on the
ELT box
Where are the regulations located for ELTs - ....ANSWER ...-
14CFR Part 91.207
How long can an aircraft be operated after the ELT has been removed -
....ANSWER ...-90 days
How often should an ELT be inspected - ....ANSWER ...-12
months
What must an ELT be tested for every 12 months -
....ANSWER ...-Proper installation, battery corrosion, operation of
....COPYRIGHT ©️ 2025 ALL RIGHTS RESERVED...TRUSTED & VERIFIED 3
