What are the indications for DUAL GEN FAIL?

What are the indications for DUAL GEN FAIL?

• A. CONV 1/2 FAIL cautions
• B. CONV 1/2 FAIL cautions and AC REF BUS DEGRAD
• C. AC REF BUS DEGRAD only
• D. DUAL GEN FAIL is not indicated

Answer: (B)

In a UH-60 electrical system, losing both engine-driven generators is shown by how the system flags power loss and bus health. If both sources fail, you’ll see two generator-related cautions—one for each converter indicating a failure on both sides—and you’ll also get a message that the AC reference bus is degraded. That combination is the clearest sign that neither generator is supplying power to the AC system, leaving the aircraft to rely on emergency power sources for essential systems. The two simultaneous CONV 1/2 FAIL cautions confirm both generator channels are not providing power, and the AC REF BUS DEGRAD confirms the AC reference bus is no longer within spec due to the loss of those sources.

In a UH-60 electrical system, losing both engine-driven generators is shown by how the system flags power loss and bus health. If both sources fail, you’ll see two generator-related cautions—one for each converter indicating a failure on both sides—and you’ll also get a message that the AC reference bus is degraded. That combination is the clearest sign that neither generator is supplying power to the AC system, leaving the aircraft to rely on emergency power sources for essential systems. The two simultaneous CONV 1/2 FAIL cautions confirm both generator channels are not providing power, and the AC REF BUS DEGRAD confirms the AC reference bus is no longer within spec due to the loss of those sources.