Engine shutdown caused fatal Army helicopter crash in Feb.: military
A sudden engine failure has been identified as the main cause behind the deadly crash of a military helicopter in February that killed two soldiers, Army officials said Thursday. The AH-1S Cobra helicopter of an Army aviation unit crashed during an emergency landing familiarization training in Gapyeong County, about 55 kilometers northeast of Seoul, on Feb. 9, killing the two warrant officers on…
A fatal crash of an Army helicopter in February was caused by a sudden engine shutdown, according to military officials. The AH-1S Cobra helicopter, belonging to an Army aviation unit, crashed during an emergency landing training exercise near Seoul on February 9, resulting in the deaths of two warrant officers on board. No civilian casualties were reported.
The investigation into the crash determined that an internal cylinder in the engine was misaligned, leading to the central drive shaft wobbling. This wobble caused violent vibrations, resulting in shaft whirling - a rapid, erratic movement of the spinning shaft. When the pilot attempted to regain altitude by increasing throttle, the spinning power shaft collided with another spinning shaft, generating extreme heat that melted the engine components and caused the engine to shut down.
The military has concluded that the cause of the accident was the engine failure due to the misaligned cylinder.
Written by urgent.news from The Korea Times's reporting — not their text. Machine-written — may contain errors; check the original before relying on it.
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