What aircraft on international flights are required to carry 406 MHz ELTs?
Internationally, ICAO determines the carriage requirements for aircraft that fall under the ICAO convention. Specifically Annexes 6 and 10 to the ICAO Convention on International Civil Aviation address operation of aircraft and aeronautical telecommunications. Annex 6 contains information on which type of flights are required to carry ELTs. All airplanes operated on long range over water flights, as well as those on flights over designated land areas are required to carry at least one ELT and in some cases up to two ELTs. Annex 10 contains details on the technical specifications of the 406 MHz ELTs.
