Individually Owned: 150,657
Corporate Owned: 137,281
Ft Worth International Airport
Aircraft Accident/Incident Report
Fort Worth, Texas 76106
Thursday, January 19, 2006 15:15 CST
NTSB Narrative Summary Released at Completion of Accident
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.
NTSB Probable Cause Narrative
The pilot's inadvertent encounter with ground resonance which resulted in the destruction of the helicopter.
Event Information
| Type of Event | Accident |
| Event Date | 1/19/2006 |
| Event Day of the Week | Thursday |
| Time of Event | 1515 |
| Event Time Zone | Central Standard Time |
| Event City | Fort Worth |
| Event State | TEXAS |
| Event Country | -- |
| Zipcode of the event site | 76106 |
| Event Date Year | 2006 |
| Event Date Month | 1 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 324907N |
| Event Location Longitude | 0972126W |
| Event Location Airport | Ft Worth International Airport |
| Event Location Nearest Airport ID | KFTW |
| Indicates whether the acc/inc occurred off or on an airport | On Airport |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | 710 |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1453 Central Standard Time |
| Direction of event from weather observation facility (degrees) | 0 |
| Weather Observation Facility ID | KFTW |
| Elevation of weather observation facility | 710 |
| Distance of event from weather observation facility (units?) | 0 |
| Time Zone of the weather observation | CST |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | -- |
| Sky/Lowest/Cloud Conditions | Clear |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 10 |
| Air Temperature at event time (in degrees celsius) | 23 |
| Dew Point at event time (in degress fahrenheit) | 7 |
| Wind Direction (degrees magnetic) | 170 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 17 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Gusting |
| Wind Gust (knots) | 23 |
| Altimeter Setting at event time (in. Hg) | 29.87 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | None |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | 1 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 20046 |
| NTSB Notification Source | FAA COMM Center |
| NTSB Notification Date | Jan 20 2006 12:00AM |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | DMS |
| Date of most recent change to record | Aug 29 2006 3:49PM |
| User who most recently changed record | NTSB\JOHB |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | Fort Worth, Texas |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N142CF |
| NTSB Number | DFW06LA057 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | Yes |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | Agusta |
| Aircraft Model | A109E |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 11141 |
| Certified Max Gross Weight | 3000 |
| Aircraft Category | Helicopter |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | No |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 4 |
| Number of Engines | 2 |
| Fixed gear or retractable gear | Retractable |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Jan 1 2006 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 1766 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | North Central Texas Services |
| Aircraft Owner Street Address | 3110 S Great Southwest Parkway |
| Aircraft Owner City | Grand Prairie |
| Aircraft Owner State | TX |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 75052 |
| Operator is an individual? | No |
| Operator Name | -- |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | -- |
| Operator Zip code | -- |
| Operator Code | -- |
| Owner has at least one certificate | None |
| Other Operator of large aircraft? | -- |
| Certified for Part 133 or 137 Operation | -- |
| Operator Certificate Number | -- |
| Indicates whether an air carrier operation was scheduled or not | -- |
| Indicates Domestic or International Flight | -- |
| Operator carrying Pax/Cargo/Mail | -- |
| Type of Flying (Per_Bus / Primary) | Positioning |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | KFTW |
| Departure City | Fort Worth |
| Departure State | TX |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | CST |
| Destination Same as Local Flt | -- |
| Destination Airport Code | KGPM |
| Destination City | Grand Prairie |
| Destination State | TX |
| Destination Country | USA |
| Specific Phase of Flight | Taxi - to takeoff |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | May 15 2006 10:54AM |
| User who most recently changed record | CASH |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | NA |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | Yes |
| Medical Flight | Medical Emergency |