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N444T accident description

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Crash location 38.727500°N, 90.508056°W
Nearest city Creve Coeur, MO
38.673663°N, 90.377339°W
8.0 miles away
Tail number N444T
Accident date 11 Jul 2003
Aircraft type Spiker Rotorway 162F
Additional details: None

NTSB Factual Report

On July 11, 2003, at 1845 central daylight time, an amateur-built Spiker Rotorway 162F helicopter, N444T, sustained minor damage when it rolled over on its left side during an engine run-up at Creve Coeur Airport, St. Louis, Missouri. The pilot was not injured. Visual meteorological conditions prevailed during the engine run-up.

The student pilot reported he was performing an engine run-up to check the engine and drive train. The pilot stated, "After run-up with collective throttle at about 100% the aircraft became airborne." The pilot reported he "immediately" lowered the collective to the full down position, but the helicopter was already beginning a roll to the left. The helicopter rotated onto its left side and came to a stop. The pilot remarked, "It is this pilot's opinion that the aircraft experienced a dynamic roll over condition." The pilot reported he did not intend to become airborne.

The pilot reported no mechanical malfunctions or defects prior to the accident.

NTSB Probable Cause

The inadvertent dynamic rollover of the helicopter after the helicopter became airborne during an engine run-up.

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