Generički termin za sve radio-farove koji se koriste za lociranje u slučaju nužde.
Francuski prevod: radiobalise de repérage de détresse
Datum usvajanja: 1. jun 1987.
Srodni izrazi: beacon; crash locator beacon; emergency locator beacon; fan marker beacon; localizer; meaconing; personal locator beacon; radio beacon; submarine locator acoustic beacon; Z marker beacon.