If the PLB test fails what shows up?

• A. 2 flashing red lights
• B. 3 flashing green lights
• C. 3 flashing red lights
• D. 1 solid red light

Answer: (C)

LED patterns on a PLB show the result of a self-test. When the self-test fails, you’ll see three flashing red lights. That three-flash red pattern is the clear signal that the test didn’t pass and something in the beacon isn’t ready to transmit properly. It’s designed to be quickly recognizable so you know to troubleshoot or service the unit before relying on it in an emergency. If you encounter this pattern, follow the manufacturer’s troubleshooting steps, check the battery and antenna connections, and retest after addressing potential issues.