ACR&Artex C406-2 HM - Manual (Page 27)

25-62-11
Page 27 of 87
JUN 20/13
ACR ELECTRONICS, INC / ARTEX PRODUCTS
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
C406-2 (453-5000), C406-2HM (453-5001)
aircraft navigation system via the ELT/NAV Interface, the accuracy improves to approximately
100 meters.
(5) The ELT transmits a digital message that allows search and rescue authorities to contact the
owner/operator of the aircraft through information contained in a database. Information
contained in the database includes:
(a) Type of aircraft and aircraft registration number,
(b) Owner address and telephone number, and
(c) Alternate emergency contact.
(6) After the ELT is activated and the 406 MHz signal is detected by the SAR satellite system and
a position is calculated, the 121.5/243.0 MHz transmissions are used to home in on the crash
site.
NOTE: Effective February 1, 2009, COSPAS-SARSAT has terminated satellite processing of
distress signals from 121.5 and 243.0 MHz beacons.
(7) Aircraft communications transceivers are not capable of receiving 406 MHz transmissions;
therefore, the only methods of monitoring the ELT are:
(a) The blinking cockpit remote switch LED,
(b) The buzzer, or
(c) 121.5/243.0 MHz transmissions, which can be monitored using the aircraft
communications transceiver or an AM radio tuned to 121.5 MHz.
SUBTASK 25-62-11-870-002
B. Components
(1) The C406-2 Series ELT main assembly is housed in a high impact, fire resistant, polycarbonate
plastic case, which is enclosed in a protective mounting frame assembly made of similar