Utility Helicopter 60M (UH-60M) Exam 3 Practice

High-speed shaft failure stops the engine’s core rotation. That shaft drives the gas generator and compressor, so when it fails, the gas generator can no longer spin. The immediate, definitive result is Ng (gas generator speed) dropping to zero. Without Ng, the engine cannot sustain compression and fuel flow control, and power output collapses soon after. So the engine parameter that most clearly goes to zero in this fault is the gas generator speed.