Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Venice, Louisiana 70091
Wednesday, August 4, 2010 6:45 CDT
NTSB Narrative Summary Released at Completion of Accident
On August 4, 2010, at 0645 central daylight time, a Bell Helicopter Textron 430 was on the ground at ground idle power conducting the engine start checklist when the collective went to the full up position. There were no injuries among the passengers and crew. Further inspection of the aircraft revealed that the main rotor collective servoactuator piston rod had fractured. No other airframe damage was noted.
The collective servo actuator was examined in the Bell Helicopter Textron’s Field Investigations Laboratory. According to Bell Helicopter Textron, the servo actuator piston rod was found to be fractured as a result of stress corrosion cracking.
In response to this incident, Bell Helicopter Textron issued a number of alert service bulletins to perform a one time inspection of the servo actuator piston rod prior to further flight. This service bulletin only applied to servo actuators manufactured by Woodward HRT. Since this same type of servo actuator was also used on other Bell Helicopter Textron helicopters, additional alert service bulletins were issued.
The Federal Aviation Administration (FAA) incorporated these service bulletins’ recommended actions (with some minor revisions) in an Emergency Airworthiness Directive. The FAA’s emergency AD followed the issuance of an AD by Transport Canada.
NTSB Probable Cause Narrative
The fracture of the collective servo actuator piston rod resulting from stress corrosion cracking.
Event Information
| Type of Event | Incident |
| Event Date | 8/4/2010 |
| Event Day of the Week | Wednesday |
| Time of Event | 645 |
| Event Time Zone | Central Daylight Time |
| Event City | Venice |
| Event State | LOUISIANA |
| Event Country | -- |
| Zipcode of the event site | 70091 |
| Event Date Year | 2010 |
| Event Date Month | 8 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | -- |
| Event Location Longitude | -- |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| Indicates whether the acc/inc occurred off or on an airport | -- |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Unknown |
| Time of the weather observation | |
| Direction of event from weather observation facility (degrees) | -- |
| Weather Observation Facility ID | -- |
| Elevation of weather observation facility | -- |
| Distance of event from weather observation facility (units?) | -- |
| Time Zone of the weather observation | -- |
| Lighting Conditions | Day |
| Lowest Ceiling Height | -- |
| Lowest Non-Ceiling Height | 5000 |
| Sky/Lowest/Cloud Conditions | Scattered |
| Sky Condition for Lowest Ceiling | None |
| Visibility Runway Visual Range (Feet) | -- |
| Visibility Runway Visual Value (Statute Miles) | -- |
| Visibility (Statute Miles) | 7 |
| Air Temperature at event time (in degrees celsius) | -- |
| Dew Point at event time (in degress fahrenheit) | -- |
| Wind Direction (degrees magnetic) | -- |
| Variable Wind Indicator | -- |
| Wind Speed (knots) | -- |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | -- |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | -- |
| 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 | 8 |
| Injury Total Serious | -- |
| Injury Total All | -- |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 28668 |
| NTSB Notification Source | -- |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | Apr 22 2011 2:49PM |
| User who most recently changed record | wars |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N430CM |
| NTSB Number | ENG10IA045 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 91: General Aviation |
| Type of Flight Plan filed | Company VFR |
| Flight plan Was Activated? | No |
| Damage | Minor |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | BELL |
| Aircraft Model | 430 |
| Aircraft Series Identifier | NO SERIES |
| Aircraft Serial Number | 49090 |
| Certified Max Gross Weight | 9300 |
| Aircraft Category | Helicopter |
| Aircraft Registration Class | -- |
| Aircraft is a homebuilt? | -- |
| Flight Crew Seats | -- |
| Cabin Crew Seats | -- |
| Passenger Seats | -- |
| Total number of seats on the aircraft | 9 |
| Number of Engines | -- |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | AAIP |
| Date of Last Inspection | Jul 8 2010 12:00AM |
| Airframe hours since last inspection | -- |
| Airframe Hours | 8288 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | -- |
| Aircraft Owner Name | Chevron USA Inc |
| Aircraft Owner Street Address | -- |
| Aircraft Owner City | Picayune |
| Aircraft Owner State | MS |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 39466 |
| Operator is an individual? | No |
| Operator Name | Chevron USA Inc |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | No |
| Operator Street Address | -- |
| Operator City | -- |
| Operator State | -- |
| Operator Country | USA |
| Operator Zip code | -- |
| Operator Code | -- |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| 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) | Other Work Use |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | -- |
| Departure City | Venice |
| Departure State | LA |
| Departure Country | USA |
| Departure Time | -- |
| Departure Time Zone | CDT |
| Destination Same as Local Flt | -- |
| Destination Airport Code | -- |
| Destination City | -- |
| Destination State | -- |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | Apr 22 2011 2:49PM |
| User who most recently changed record | wars |
| Since inspection or accident | Time of Accident |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |