Bison Municipal Airport
Aircraft Accident/Incident Report

Bison, South Dakota 57620
Tuesady, July 6, 2010 18:40 MDT

NTSB Narrative Summary Released at Completion of Accident

The pilot reported that he applied right aileron to correct for a 9-knot crosswind during takeoff. The airplane encountered a gust of wind just after liftoff about 5 feet above the runway. The pilot stated that he "over-reacted" in applying right aileron and lowering the nose of the aircraft. The airplane drifted off the left side of the runway, where it descended into 30- to 36-inch-tall grass. The right wing tip contacted the ground followed by the rest of the airplane, causing substantial damage to the right wing.

NTSB Probable Cause Narrative

The pilot's failure to maintain directional control of the airplane after encountering a gust of wind while taking off with a crosswind.

Event Information

Type of Event Accident
Event Date 7/6/2010
Event Day of the Week Tuesday
Time of Event 1840
Event Time Zone Mountain Daylight Time
Event City Bison
Event State SOUTH DAKOTA
Event Country --
Zipcode of the event site 57620
Event Date Year 2010
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 453106N
Event Location Longitude 1022804W
Event Location Airport Bison Municipal Airport
Event Location Nearest Airport ID 6V5
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 2785
Weather Briefing Completeness --
Investigator's weather source Pilot
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 MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height 11000
Sky/Lowest/Cloud Conditions Few
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) 29
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 330
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 9
Wind Velocity Indicator --
Wind Gust Indicator Gusting
Wind Gust (knots) 10
Altimeter Setting at event time (in. Hg) 30.1
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) 27339
NTSB Notification Source FAA
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Aug 19 2010 11:27AM
User who most recently changed record dinc
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N391EU
NTSB Number CEN10CA415
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name SKYKITS CORP
Aircraft Model SAVANNAH VGW
Aircraft Series Identifier --
Aircraft Serial Number 08-11-51-786
Certified Max Gross Weight 1235
Aircraft Category Airplane
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 --
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours 48
ELT Installed Yes
ELT Activated No
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name Ken Morhain
Aircraft Owner Street Address --
Aircraft Owner City Anchorage
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99508
Operator is an individual? No
Operator Name Ken Morhain
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City Anchorage
Operator State AK
Operator Country USA
Operator Zip code 99508
Operator Code --
Owner has at least one certificate None
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) Ferry
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 6V5
Departure City Bison
Departure State SD
Departure Country USA
Departure Time 1840
Departure Time Zone MDT
Destination Same as Local Flt --
Destination Airport Code MLS
Destination City Miles City
Destination State MT
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Aug 3 2010 9:08PM
User who most recently changed record sulp
Since inspection or accident Time of Accident
Event Location Runway Number and Location 29
Runway Length 3500
Runway Width 60
Sight Seeing flight No
Air Medical Flight No
Medical Flight --