Which indicator appears when a PLB test fails?

Which indicator appears when a PLB test fails?

• A. Two flashing red lights
• B. Three flashing red lights
• C. One solid red light
• D. No lights

Answer: (B)

During a PLB self-test, the beacon’s LED indicators communicate the result. Red lights signal fault conditions, and the specific pattern shows whether the test passed or failed. If the test fails, you’ll see three flashing red lights. That pattern tells you the internal checks didn’t pass, so you should service or replace the unit (per the manual) and re-test after addressing the issue. Other LED patterns indicate different statuses: for example, a single solid red light or no lights point to other conditions like power issues or the unit not being active, not a failed test. The three-flashing-red pattern is the clear signal of a failed test.

During a PLB self-test, the beacon’s LED indicators communicate the result. Red lights signal fault conditions, and the specific pattern shows whether the test passed or failed. If the test fails, you’ll see three flashing red lights. That pattern tells you the internal checks didn’t pass, so you should service or replace the unit (per the manual) and re-test after addressing the issue. Other LED patterns indicate different statuses: for example, a single solid red light or no lights point to other conditions like power issues or the unit not being active, not a failed test. The three-flashing-red pattern is the clear signal of a failed test.