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ASN Wikibase Occurrence # 44673
Last updated: 27 August 2020
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Type:Silhouette image of generic GLAS model; specific model in this crash may look slightly different
Glasair II
Registration: N706C
C/n / msn: 307
Fatalities:Fatalities: 1 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Hermiston, OR -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Hermiston, OR (HRI)
Destination airport:
Investigating agency: NTSB

After performing a number of low-level aerobatic maneuvers to the east of the airport, the pilot made a low-level pass over the runway from east to west. He then executed a rapid pull-up, and climbed on a near-vertical line. As the aircraft climbed, its airspeed decreased to the point that when the pilot executed a wingover maneuver at the top of the climb, the aircraft entered a spin. It then spun two or three times to the left, before its rotation rate began to decrease. As the rotation rate decreased, the pilot attempted to pull out of the dive, but the aircraft impacted the terrain and immediately burst into flames. There was no indication of any problems with the flight controls, nor any evidence that there had been a malfunction associated with the engine.
Probable Cause: The pilot's failure to maintain an airspeed above stall speed while executing a wingover maneuver at the top of a vertical climb, leading to an inadvertent spin, and the pilot's inadequate remedial action in attempting to recover from the spin. Factors include performing aerobatic maneuvers close to the terrain.



Revision history:

28-Oct-2008 00:45 ASN archive Added
21-Dec-2016 19:24 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
07-Dec-2017 18:27 ASN Update Bot Updated [Destination airport, Source, Narrative]

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