Name two emergency locator devices used in aviation.

• A. ELT and GPS
• B. ELT and PLB
• C. GPS and PLB
• D. VOR and ADF

Answer: (B)

Emergency locator devices are transmitters that broadcast distress signals to speed rescue. An ELT is aircraft-mounted and is designed to activate automatically after a crash or manually by crew, sending a beacon signal that helps rescuers locate the aircraft and occupants. A PLB is a portable beacon carried by a person or crew and can be activated if you abandon the aircraft or are away from it, providing a similar distress signal to the search-and-rescue network. Both are designed to connect to the international rescue system and relay your location, often with GPS data to pinpoint you quickly. GPS, by contrast, is a navigation system, not a distress beacon, and VOR/ADF are navigational aids that help determine position and bearing rather than broadcast emergency signals.