What is the purpose of an emergency locator transmitter (ELT)?

The purpose of an emergency locator transmitter (ELT) is to provide a distress signal in the event of an accident. When activated, an ELT transmits a specific radio signal that can be picked up by search and rescue organizations. This signal helps rescuers locate the aircraft quickly and efficiently, thereby increasing the chances of survival for any occupants. The ELT is a critical safety device that plays a vital role in emergency response efforts, ensuring that even if an aircraft crashes in a remote area, the likelihood of a timely rescue is enhanced.

In contrast, devices that assist with navigation or relay communication with air traffic control serve different functions and are not specifically designed for emergency distress signaling. Monitoring engine performance is also unrelated to the main purpose of an ELT, further emphasizing that the correct answer accurately reflects the primary function of this essential piece of safety equipment.