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ASN Wikibase Occurrence # 77802
Last updated: 17 October 2018
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Date:19-JAN-2006
Time:15:15
Type:Silhouette image of generic A109 model; specific model in this crash may look slightly different
Agusta A109E Power
Owner/operator:CareFlight
Registration: N142CF
C/n / msn: 11141
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Category:Accident
Location:Forth Worth, TX -   United States of America
Phase: Taxi
Nature:Ferry/positioning
Departure airport:Fort Worth, TX (KFTW)
Destination airport:Grand Prairie, TX (KGPM)
Investigating agency: NTSB
Narrative:
The 6,500-hour commercial helicopter rated pilot inadvertently encountered ground resonance while ground taxiing. The pilot performed a normal startup and prepared for ground taxi. He moved the helicopter forward and then started the helicopter in a 90-degree ground taxi turn at 30-degree intervals. He pushed on the toe brakes to stop the helicopter to give right of way to an aircraft taxiing down the taxiway. At this time the helicopter started to shake and bounce. Before the pilot could get the aircraft shutdown, the aircraft executed an uncommanded 90-degree turn to the left. The helicopter's main rotors and transmission assembly separated from the airframe. The wind at the time of the accident was reported to be from 170 degrees at 17 knots, gusting to 23 knots.
Probable Cause: The pilot's inadvertent encounter with ground resonance which resulted in the destruction of the helicopter.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20060130X00132&key=1


Revision history:

Date/timeContributorUpdates
17-Sep-2010 10:01 pesce Added
24-Jan-2013 13:16 TB Updated [Time, Cn, Operator, Location, Damage, Narrative]
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
05-Dec-2017 09:00 ASN Update Bot Updated [Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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