What is the correct way to check if the ELT is operational?

The correct method for checking if the Emergency Locator Transmitter (ELT) is operational involves performing the check during the first 5 minutes past each hour. This timing is significant because it adheres to regulatory guidance, which specifies that testing should occur at a regular interval to ensure the ELT is functional without interfering with emergency communications or over-the-air testing.

The first 5 minutes past each hour is a recognized practice that allows pilots to confirm the ELT's operation systematically. Doing the test at this time minimizes the risk of overlapping with other distress signals while maintaining the essential readiness of the ELT in case an actual emergency arises. Regular testing ensures that the device remains functional and can transmit an emergency signal if needed, which enhances the safety of the flight.

Testing at longer intervals, such as 10 or 15 minutes, or randomly during the flight, may not provide reliable information about the ELT's operational status and could lead to missing critical alerts in the event of a real emergency. Consistent and structured testing practices are vital for ensuring aviation safety.