Diamond DA20-C1 - Emergency Locator Transmitter (Elt); General; Description

Page 1
Rev 19
25-60-01
Equipment/Furnishings
DA20-C1 AMM
DA201-C1
09 Dec 11
EMERGENCY LOCATOR TRANSMITTER (ELT)
1. General
This chapter describes about the optional ARTEX ELT model ME 406. Refer to the manufacturer's
Operator's Manual for more data.
2. Description
A. ELT Equipment
(1) Location
The ME 406 ELT is located in a mounting bracket on the right side of the rear fuselage
compartment adjacent to the baggage tray. For reverse panel configurations, the ME 406 ELT
is located in a side bracket on the left side of the rear fuselage compartment adjacent to the
baggage tray. A Velcro strap attached to the mounting bracket holds the ME 406 ELT in
position. The ME 406 ELT has an antenna installed through a side bracket hole in accordance
with the Artex ME 406 Manual.
(2) Signal Transmission
The ME 406 ELT transmits signals automatically after a crash on the emergency frequencies
of 121.5 and 406.028 Megahertz (MHz). Every 50 seconds the transmitter transmits a signal
on the 406.028 MHz frequency to a satellite. The signal to the satellite contains the serial
number of the ELT transmitter or the aircraft ID, a country code and a unique identity code.
The satellite will also give the emergency services a more accurate location for the aircraft.
(3) Functional Test
Do regular functional tests (Refer to the Maintenance Practices in this Section).
B. ELT Batteries
The ME 406 ELT has its own battery pack to supply electrical power. When the ELT is ON and
transmitting, the batteries will keep the ELT transmitting the 121.5 MHz frequency until battery
power is drained out and will transmit the 406.028 MHz frequency for up to 24 hours.
It is important to monitor the battery expiry dates for the battery pack. The expiry date for the
battery pack is shown on the identity plate for the transmitter. The battery pack must be replaced:
- After use in an emergency
- After the transmitter has been accidentally switched ON for an unknown period of time
- After 1 hour of accumulated use (testing)
- On or before the battery pack expiry date.