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Section 9 Cirrus Design
Supplements SR22
Section 1 - General
The 406 MHz emergency locator transmitter (ELT) is a radio-frequency
transmitter that generates a signal to assist in search and rescue for
missing aircraft. The ELT automatically transmits the standard sweep
tone on 121.5 MHz if rapid deceleration is detected. In addition, for the
first 24 hours of operation, a 406 MHz signal containing aircraft
specific information is transmitted at 50 seconds for 440 milliseconds.
8
CIRCUIT
BREAKER
PANEL
OR
ALT AIR
BRACKET
(REF)
4
MOUNTING
TRAY (REF)
SR22_FM09_2677A
LEGEND
1. LED Annunciator
2. Remote Switch
3. Antenna
4 Remote Cable
5. Main Control Switch
6. Antenna Jack
7. Attach Straps
8. Artex ME406 ELT
1
2
3
7
6
1
5
WARNING FORWARD
Artex ME406 ELT System
Revision 01: 05-13-08
Figure - 1
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Cirrus Design Section 9
SR22 Supplements
Section 2 - Limitations
No Change.
Section 3 - Emergency Procedures
Forced Landing
Before performing a forced landing activate the ELT transmitter
manually by turning the ELT remote switch to the 'ON'-position.
Immediately after a forced landing, perform the following procedure:
• Note •
The ELT Remote Switch and Control Panel Indicator could be
inoperative in the event of a forced landing. If inoperative, the
inertia “G” switch will activate automatically. However, to turn
the ELT OFF and ON will require manual switching of the main
control switch located on the ELT unit.
1. ELT Remote Switch .........................................................Verify ON
• Switch the ELT Remote Switch ON even if the red LED
annunciator is flashing.
• If airplane radio operable and can be safety used (no threat of
fire or explosion), turn radio ON and select 121.5 MHz. If the
ELT can be heard transmitting, it is working properly.
2. Battery Power ..................................................................Conserve
• Do not use radio transceiver until rescue aircraft is sighted.
After sighting rescue aircraft:
3. ELT Remote Switch ................................................ “ARM” position
to prevent radio interference.
• Attempt contact with rescue aircraft with the radio transceiver
set to a frequency of 121.5 MHz. If no contact is established,
switch the panel mounted switch to the 'ON'-position
immediately.
(Continued on following page)
Revision 01: 05-13-08
4 of 8 13772-131
Section 9 Cirrus Design
Supplements SR22
Portable Use of ELT
The ELT transmitter can be removed from the airplane and used as a
personal locating device if it is necessary to leave the airplane after an
accident. Access the unit as described below and set the ELT
transmitter control switch to the 'ON'-position.
1. Remove avionics bay access panel along the aft portion of the RH
fuselage or the lower aft center access panel of baggage
compartment.
2. Disconnect fixed antenna lead from front of unit.
3. Disconnect lead from remote switch and indicator unit.
4. Disconnect antenna from mounting tray.
5. Loosen attach straps and remove transmitter unit.
6. Attach antenna to antenna jack on front of unit.
7. Set main control switch to ON.
8. Hold antenna upright as much as possible.
Section 4 - Normal Procedures
No Change.
Section 5 - Performance
No Change.
Section 6 - Weight & Balance
Installation of the subject propeller adds the following optional (Sym =
O) equipment at the weight and arm shown in the following table.
ATA /
Item Description Sym Qty Part Number Unit
Wt Arm
25-01 Artex ME406 ELT and Batteries O 1 17190-100 3.4 229.5
Revision 01: 05-13-08
13772-131 5 of 8
Cirrus Design Section 9
SR22 Supplements
Section 7 - Systems Description
This airplane is equipped with a self-contained Artex ME406 406 MHz
ELT System. The transmitter unit is automatically activated upon
sensing a change of velocity along its longitudinal axis exceeding 4 to
5 feet per second. Once activated, the transmitter transmits VHF band
audio sweeps at 121.5 Mhz until battery power is gone. In addition, for
the first 24 hours of operation, a 406 MHz signal is transmitted at 50-
second intervals. This transmission lasts 440 ms and contains
identification data received by Cospas-Sarsat satellites. The
transmitted data is referenced in a database maintained by the
national authority responsible for ELT registration to identify the
　
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