Cabin Features; Emergency Locator Transmitter - Cirrus SR20 Pilot Operating Handbook

Section 7
Airplane and Systems Description

Cabin Features

Emergency Locator Transmitter

The airplane is equipped with a self-contained emergency locator
transmitter (ELT). The transmitter and antenna are installed
immediately behind the aft cabin bulkhead, slightly to the right of the
airplane centerline. The main transmitter control switch, labeled ON-
OFF-ARMED, on the transmitter is in the armed position for normal
operations. A remote switch and indicator panel is installed on the left
console near the pilot's right knee. If rapid deceleration is detected, the
transmitter will repeatedly transmit VHF band audio sweeps at 121.5
MHz and 243.0 MHz approximately 0.5 seconds apart.
The transmitter and antenna are accessible through the avionics bay
access panel along the aft portion of the RH fuselage or the lower aft
center access panel of baggage compartment The ELT can be
removed from the airplane and used as a personal locating device if it
is necessary to leave the airplane after an accident. Eight dated "D"
cell alkaline batteries contained within the transmitter unit power the
ELT transmitter. The batteries must be replaced at specified intervals
based upon the date appearing on the battery (Refer to Airplane
Maintenance Manual).
ELT Remote Switch and Indicator Panel
The ELT remote switch and indicator panel, located on the left console
near the pilot's right knee, provides test and monitoring functions for
the ELT. The panel contains a button labeled ON, a button labeled
RESET, and a red LED (light). The red light flashes when the ELT is
transmitting. The ON button is used to test the unit in accordance with
the maintenance manual procedures. The RESET button can be used
to cancel an inadvertent transmission. A 6-volt Lithium battery
mounted in the panel powers the LED. The battery must be replaced
at regular intervals (Refer to Airplane Maintenance Manual).
In the event of an accident:
1. Verify ELT operation by noting that the ELT indicator light on the
remote panel is flashing.
2. If possible, access the unit as described below and set the ELT
main transmitter control switch ON.
Portable use of ELT:
a. Remove access at lower aft center of baggage compartment.
7-100
Cirrus Design
SR20
P/N 21399-004
Revision A1