What is the procedure to test the ELT?

The procedure to test the Emergency Locator Transmitter (ELT) involves running it for three short cycles within the first five minutes of the hour. This method allows for a brief check of the transmitter's functionality without interfering with actual emergency frequencies. Conducting the test in this way ensures that the ELT is operating properly while minimizing the risk of causing confusion for search and rescue operations, since the testing takes place at specified intervals.

Other options do not align with standard procedures. Testing the ELT by turning it on for an extended period or testing it every hour could disrupt real emergency communications. A requirement to test only during night flights is not applicable, as ELT tests should be conducted regularly regardless of the time of day, following established guidelines to ensure readiness in the event of an actual emergency. Thus, the correct procedure is to perform the test in a controlled and regulated manner, as outlined by option C.