Bailey Moyes 912 Dragonfly Maintenance Manual Download

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3.1 Monitor 121.5 MHz using the Aircraft Com Receiver or Portable Hand Held
Receiver. Turn the Squelch all the way up or ON.

3.2 Ensure that the main switch on the ELT is on “ARM” position.
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Push the “ON” button on the Cockpit Remote Switch Unit. Verify that both the Green ON lights, located on

the Main Unit and the Cockpit Remote Switch Unit, are flashing. Verify the Buzzer sound periodically. Verify the
ELT audio sweep tone can be heard on the Com Receiver.

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Push the RESET button on the Remote Switch unit. Verify that the two Green ON lights are extinguished.

Verify the Buzzer sound ceased. Verify the ELT audio sweep tone ceased.

G Switch Check: Activate the G switch by using a rapid forward (throwing) motion coupled by a rapid reversing
action. Verify that the ELT has been activated by use of the Wattmeter, the Airplane’s VHF Radio
Communications Receiver when tuned to
121.5 MHz, or other means (see Note 1). The ELT must then be reset by pressing either the RESET push button
located on the ELT main unit or the ELT Remote Unit.

Note 1:
This is not a measured check. It only indicates that the G-Switch is working.

Note:
In normal configuration, the main switch on the ELT Main Unit must be selected to the “ARM” position. Whenever
both the Green ON lights (located on the Main Unit
and the Remote Switch Unit) flash and the Buzzer sound periodically, they indicate
the ELT is transmitting.

If the ELT be accidentally activated by turbulence, hard landing, etc., or if this occur under any conditions other
than an accident requiring immediate assistance, pressing the RESET button on the Remote Switch Unit.

If the Aircraft is on the ground and the RESET button on the Remote Unit does not cause the Green ON light to
extinguish, the RESET button on the Main Unit should be pressed. If airborne and the RESET button on the
Remote unit does not cause the Green ON LIGHT to extinguish, the main switch on the ELT should be set to the
OFF position, if the ELT is accessible.

If the ELT is not accessible in flight, you should land at the nearest suitable airport and set the Main Switch to the
OFF position. In either case, the unit should be inspected by qualified facility as soon as possible.

The Aircraft may be operated with the ELT removed for inspection or repair subject to the conditions of FAR
91.207.

In the event of an accident, Push the “ON” button on the Cockpit Remote Switch
Unit. The ELT will be ON immediately.

In the event of an accident, ensure that the External Aircraft Antenna has no damage.
Important:
If the ELT is accessible after the accident, place the Main Switch in the ON position and monitor it on 121.5 MHz
for proper operation if possible. If the Antenna is broken off of the Aircraft, the ELT Unit should be removed and
the portable antenna to be used. If the ELT Unit is to remain at the Aircraft site, it should
be placed on a large metallic portion of the airframe with its Antenna pointing skyward. The Green ON lights
should be flashing after the accident.

If the ELT is to be taken along as the Portable Unit when leaving the scene of the accident, place the Main switch in
the ON position and keep the Antenna vertically oriented as much as possible. The ELT Green ON light should be
flashing.

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Green ON lights, Buzzer sound, and Antenna check: (Red Light & no buzzer for AK-450)

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Green ON Lights and Buzzer Sound Functions: (Red Light & no buzzer for AK-450)

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Green ON lights, located on the ELT main unit and remote switch unit: (Red Light for AK-450)

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In ON mode: Green ON LED flashes continuously (1 second ON, 4 second OFF) and the Buzzer sound
periodically. The ELT swept Tone must be heard on the 121.5 MHz VHF Radio. This is to indicate that the
ELT has been manually activated.

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In ARM mode: Green ON light flashes continuously (1 second ON, 4 second OFF) and the Buzzer sound
periodically. ELT swept Tone is heard on the 121.5 MHz VHF Radio. This is to indicate that the ELT has
been auto activated by the G switch.

•

Antenna Check: A low quality AM Broadcast Radio Receiver or Equivalent Test Equipment should be
used to determine if energy is being transmitted from the Antenna. When the Antenna of this Radio

Appendix F Page 10