Individually Owned: 150,657
Corporate Owned: 137,281
Aircraft Accident/Incident Report
Newfane, Vermont 05345
Wednesday, April 21, 2010 11:01 EDT
NTSB Narrative Summary Released at Completion of Accident
The accident occurred during a procedure to install a hold-down block onto a pulling rope located between powerline structures. An all stop order to quit pulling the rope was reportedly given 3 to 5 minutes before the accident and confirmed by the pilot via radio before maneuvering to begin the hold-down block installation. No movement of the pulling rope was reported by personnel associated with the installation. The pilot confirmed there was adequate clearance to work and positioned the helicopter near one of the structures as the additional lineman in the helicopter installed the hold-down block. After completion, the lineman in the helicopter saw two waves in the pulling rope. The first wave missed the helicopter but the second wave contacted the main rotor blade, wrapping around the main rotor mast. The lineman jumped into the helicopter, which descended to the ground and came to rest on its left side nearly inverted. The operator reported that there was no preimpact mechanical failure or malfunction with the helicopter. No determination could be made as to the reason for the reported wave in the pulling rope.
NTSB Probable Cause Narrative
The pilot's inadvertent encounter with a rope while maneuvering during powerline operations for undetermined reasons.
Event Information
| Type of Event | Accident |
| Event Date | 4/21/2010 |
| Event Day of the Week | Wednesday |
| Time of Event | 1101 |
| Event Time Zone | Eastern Daylight Time |
| Event City | Newfane |
| Event State | VERMONT |
| Event Country | -- |
| Zipcode of the event site | 05345 |
| Event Date Year | 2010 |
| Event Date Month | 4 |
| MidAir Collision Indicator | No |
| On Ground Collision occurred ? | No |
| Event Location Latitude | 425951N |
| Event Location Longitude | 0723715W |
| Event Location Airport | -- |
| Event Location Nearest Airport ID | -- |
| Indicates whether the acc/inc occurred off or on an airport | Off Airport/Airstrip |
| Distance from airport in statute miles | -- |
| Degrees magnetic from airport | -- |
| Airport Elevation | -- |
| Weather Briefing Completeness | -- |
| Investigator's weather source | Weather Observation Facility |
| Time of the weather observation | 1055 Eastern Daylight Time |
| Direction of event from weather observation facility (degrees) | 110 |
| Weather Observation Facility ID | EEN |
| Elevation of weather observation facility | 488 |
| Distance of event from weather observation facility (units?) | 17 |
| Time Zone of the weather observation | EDT |
| 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) | 17 |
| Dew Point at event time (in degress fahrenheit) | 3 |
| Wind Direction (degrees magnetic) | 220 |
| Variable Wind Indicator | Wind direction could be determined |
| Wind Speed (knots) | 5 |
| Wind Velocity Indicator | -- |
| Wind Gust Indicator | Not Gusting |
| Wind Gust (knots) | -- |
| Altimeter Setting at event time (in. Hg) | 29.82 |
| Density Altitude (feet) | -- |
| Intensity of Precipitation | -- |
| METAR weather report | -- |
| Event Highest Injury | Serious |
| On Ground, Fatal Injuries | -- |
| On Ground, Minor Injuries | -- |
| On Ground, Serious Injuries | -- |
| Injury Total Fatal | -- |
| Injury Total Minor | -- |
| Injury Total None | -- |
| Injury Total Serious | 2 |
| Injury Total All | 2 |
| Investigating Agency | NTSB |
| NTSB Docket Number (internal use) | 28471 |
| NTSB Notification Source | FAA New England ROC |
| NTSB Notification Date | -- |
| NTSB Notification Time | -- |
| Fiche Number and/or location -used to find docket information | -- |
| Date of most recent change to record | May 25 2011 2:18PM |
| User who most recently changed record | kenj |
| Basic weather conditions | Visual Meteorological Cond |
| FAA District Office | -- |
Aircraft Involved |
|
|---|---|
Aircraft #1 |
|
| Aircraft Registration Number | N400MB |
| NTSB Number | ERA10LA238 |
| Missing Aircraft Indicator | -- |
| Federal Aviation Reg. Part | Part 133: Rotorcraft Ext. Load |
| Type of Flight Plan filed | None |
| Flight plan Was Activated? | No |
| Damage | Substantial |
| Aircraft Fire | None |
| Aircraft Explosion | None |
| Aircraft Manufacturer's Full Name | MCDONNELL DOUGLAS HELICOPTER |
| Aircraft Model | 369E |
| Aircraft Series Identifier | -- |
| Aircraft Serial Number | 0420E |
| 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 | 2 |
| Number of Engines | 1 |
| Fixed gear or retractable gear | Fixed |
| Aircraft, Type of Last Inspection | 100 Hour |
| Date of Last Inspection | Apr 14 2010 12:00AM |
| Airframe hours since last inspection | 14 |
| Airframe Hours | 2674 |
| ELT Installed | Yes |
| ELT Activated | No |
| ELT Aided Location of Event Site | No |
| ELT Type | Unknown |
| Aircraft Owner Name | Air 2 LLC |
| Aircraft Owner Street Address | 2345 York Road, Suite 102 |
| Aircraft Owner City | Timonium |
| Aircraft Owner State | MD |
| Aircraft Owner Country | USA |
| Aircraft Owner Zipcode | 21093-2261 |
| Operator is an individual? | No |
| Operator Name | Air 2 LLC |
| Operator Same as Owner? | Yes |
| Operator Is Doing Business As | -- |
| Operator Address Same as Owner? | Yes |
| Operator Street Address | 2345 York Road, Suite 102 |
| Operator City | Timonium |
| Operator State | MD |
| Operator Country | USA |
| Operator Zip code | 21093-2261 |
| Operator Code | -- |
| Owner has at least one certificate | Yes - certificate holder |
| Other Operator of large aircraft? | No |
| Certified for Part 133 or 137 Operation | External Load |
| 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) | External Load |
| Second Pilot on Board | No |
| Departure Point Same as Event | Yes |
| Departure Airport Code | -- |
| Departure City | Newfane |
| Departure State | VT |
| Departure Country | USA |
| Departure Time | 1045 |
| Departure Time Zone | EDT |
| Destination Same as Local Flt | dest & departure same, accident can occur anywhere |
| Destination Airport Code | -- |
| Destination City | Newfane |
| Destination State | VT |
| Destination Country | USA |
| Specific Phase of Flight | -- |
| Report sent to ICAO? | -- |
| Evacuation occurred | -- |
| Date of most recent change to record | May 25 2011 2:18PM |
| User who most recently changed record | kenj |
| Since inspection or accident | Last Inspection |
| Event Location Runway Number and Location | N/A |
| Runway Length | -- |
| Runway Width | -- |
| Sight Seeing flight | No |
| Air Medical Flight | No |
| Medical Flight | -- |