I A P 2 0 2 3 . 0 0 1 - A F M / I R I S T E X A N I I P A G E | 154
FOR SIMULATION USE ONLY – NOT A TRAINING AID
EMERGENCY LOCATOR TRANSMITTER (ELT)
The aircraft is equipped with an emergency locator transmitter (ELT) system which
includes an ELT switch panel, in the front cockpit only, and an ELT transmitter
mounted in the tail cone.
The ELT switch has two positions, ON and ARM. The ON position is used to test the
function of the ELT transmitter, or manually activate the transmitter.
The ARM position is the normal in-flight position. With the ELT switch in the ARM
position, the system is armed to activate in the event of an impact. A transmit
annunciator, placarded XMT, illuminates when the ELT switch is set to ON, to
indicate the ELT is transmitting.
An impact switch in the remotely mounted ELT transmitter senses any impact loads
and activates the transmitter. When activated by the cockpit ELT switch, or by the
impact switch in a crash, the transmitter broadcasts on 121.5 MHz and 406 MHz with
a unique downward sweeping audio tone.
Power for the ELT comes from an internal battery. The battery allows the ELT to
transmit for at least 50 hours.
STANDBY VHF CONTROL HEAD
The standby VHF control head, provides control of VHF radio communications
independent of the integrated avionics system. Pushing the function selector knob,
placarded PWR, turns on the VHF control head.
Rotating the MODE knob to TST inhibits the automatic squelch circuit permitting
receiver noise to be heard, which confirms the receiver is operational. The TX
annunciator in the upper left display area indicates that VHF communications is
being transmitted.
NOTE
When the standby VHF control head is tuned on, REMOTE will be displayed on
W2 of the UFCP NAV persistent page.
The knob, placarded COM2, on the audio control panel must be in the out position to
hear the received VHF transmissions in the headset. The VHF transmission is only
heard in the cockpit where the COM2 knob is pulled.
Received VHF audio volume is controlled by rotating the audio panel COM2 knob
counterclockwise to decrease the volume and clockwise to increase the volume.
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