Termination of 121.5 MHz Beacons for Satellite Alerting is Coming Soon

On 1 February 2009, the International Cospas-Sarsat [1] Organization (U.S. included) will terminate processing of distress signals emitted by 121.5 MHz Emergency Locator Transmitters (ELTs). This means that pilots flying aircraft equipped with 121.5 MHz ELTs after that date will have to depend on pilots of over flying aircraft and or ground stations monitoring 121.5 to hear and report distress alert signals, transmitted from a possible crash site.

[1] The COSPAS-SARSAT Organization provides a satellite based world-wide monitoring system that detects and locates distress signals transmitted by Emergency Locator Transmitters (ELTs), Emergency Position Indicating Radio Beacons (EPIRBs) and Personal Locator Beacons (PLBs). The system includes space and ground segments which process the signals received from the beacon source and forwards the distress alert data to the appropriate RescueCoordinationCenter for action.

Is there an alternative?

Yes, the Cospas-Sarsat System (U.S. included) has been and will continue processing emergency signals transmitted by 406 MHz ELTs. These 5 Watt digital beacons transmit a much stronger signal, are more accurate, verifiable and traceable to the registered beacon owner (406 MHz ELTs must be registered by the owner in accordance with Federal Communications Commission (FCC) regulation). Registration allows the search and rescue authorities to contact the beacon owner, or his or her designated alternate by telephone to determine if a real emergency exists. Therefore, a simple telephone call often solves a 406 MHz alerts without launching costly and limited search and rescue resources, which would have to be done for a 121.5 MHz alert. For these reasons, the search and rescue community is encouraging aircraft owners to consider retrofit of 406 MHz ELTs or at a minimum, consider the purchase of a handheld 406 MHz Personal Locator Beacon (PLB) which can be carried in the cockpit while continuing to maintain a fixed 121.5 MHz ELT mounted in the aircraft's tail.

Download The NOAA SARSAT brochure in PDF form.

---

Contact me: Fritz Wagoner

BACK