Plain English Meaning

The engine lights off during start but gets stuck spinning too slowly. It never reaches the speed it should idle at, and it can overheat quickly if left running.

Full Definition

A turbine engine start in which ignition occurs but the engine fails to accelerate to its normal idle RPM, instead stabilizing at a lower-than-idle speed. Exhaust gas temperature (EGT) often climbs toward or beyond limits because the engine is producing combustion without enough airflow to cool itself. A hung start requires immediate shutdown to prevent thermal damage.

Context Anchor

Encountered during turbine engine start procedures, especially while watching engine speed and during start.