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ASN Wikibase Occurrence # 77949
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Type:Silhouette image of generic EXEC model; specific model in this crash may look slightly different
RotorWay Exec 90
Registration: N520RW
MSN: 6839
Fatalities:Fatalities: 1 / Occupants: 1
Aircraft damage: Substantial
Location:Waller County near Pattison, Texas -   United States of America
Phase: En route
Departure airport:Brookshire, TX (NONE)
Destination airport:Brookshire, TX (NONE)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
A witness working in a field observed the helicopter fly overhead and heard the rotor blades making "funny noises." Shortly after, the witness lost sight of the helicopter and observed a plume of smoke. A postaccident examination of the helicopter revealed no pre-impact mechanical anomalies with the flight control system, rotor system, or engine. A technical representative of the helicopter manufacturer examined the photographs taken on scene, and reported that the main rotor blades displayed signatures consistent with a decay of the main rotor rpm.
Probable Cause: The pilot's failure to maintain main rotor rpm, which resulted in an uncontrolled descent and collision with terrain.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 1 year and 3 months
Download report: Final report

Revision history:

26-Sep-2010 02:24 slowkid Added
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
26-Nov-2017 18:11 ASN Update Bot Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative]

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