What is the function of the CAS message ELT ON?

The function of the CAS message ELT ON is to indicate that the emergency locator transmitter (ELT) is active. This is a critical safety feature in aviation, as the ELT is designed to emit a distress signal in the event of an accident or emergency situation. Its activation alerts search and rescue operations that an aircraft is in distress, facilitating a quicker response to locate and assist those in need.

Recognizing that the ELT is turned on is vital for crew and ground personnel, as it informs them that the aircraft may require urgent help. This function is pivotal in emergency situations, reinforcing the importance of maintaining situational awareness regarding aircraft systems and their statuses during flight operations.