Thompsonville Airport
Aircraft Accident/Incident Report

Thompsonville, Michigan 49683
Sunday, August 4, 1996 15:30 EDT

NTSB Narrative Summary Released at Completion of Accident

The pilot said that 'just after the tow plane rotated for takeoff, the pilot (of the tow plane) pulled power. The glider quickly gained on the tow plane.' The pilot did not believe that he could land behind the tow plane. 'I released (the tow cable) and turned to the right over an open field of tall weeds. I leveled off (and) made a course correction which realigned me with the runway. (I) used the altitude we had to gain as much airspeed as possible and flew across the weed field until finally settling into the tall weeds. The horizontal plane surface and the left wing were struck by rotten stumps hidden by the weeds.' The tow plane pilot said that the airplane was not developing full power and he decided to abort the takeoff. Examination of the tow plane revealed no anomalies.

NTSB Probable Cause Narrative

an evasive maneuver necessitated by the tow plane's aborted takeoff.

Event Information

Type of Event Accident
Event Date 8/4/1996
Event Day of the Week Sunday
Time of Event 1530
Event Time Zone Eastern Daylight Time
Event City THOMPSONVILLE
Event State MICHIGAN
Event Country --
Zipcode of the event site 49683
Event Date Year 1996
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport THOMPSONVILLE
Event Location Nearest Airport ID 7Y2
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 1
Degrees magnetic from airport 90
Airport Elevation 800
Weather Briefing Completeness Not pertinent
Investigator's weather source Weather Observation Facility
Time of the weather observation 1550 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 40
Weather Observation Facility ID TVC
Elevation of weather observation facility 625
Distance of event from weather observation facility (units?) 23
Time Zone of the weather observation EDT
Lighting Conditions Day
Lowest Ceiling Height 20000
Lowest Non-Ceiling Height 0
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Overcast
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 12
Air Temperature at event time (in degrees celsius) 30
Dew Point at event time (in degress fahrenheit) 14
Wind Direction (degrees magnetic) 200
Variable Wind Indicator Unknown
Wind Speed (knots) 10
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 30
Density Altitude (feet) 900
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury None
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
Injury Total Fatal --
Injury Total Minor --
Injury Total None 1
Injury Total Serious --
Injury Total All --
Investigating Agency NTSB
NTSB Docket Number (internal use) 1757
NTSB Notification Source --
NTSB Notification Date Aug 4 1996 12:00AM
NTSB Notification Time 2000
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 8 2000 10:16AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N11EK
NTSB Number CHI96LA279
Missing Aircraft Indicator N
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 Schleicher
Aircraft Model ASK-13
Aircraft Series Identifier ASK-13
Aircraft Serial Number 13401
Certified Max Gross Weight 1060
Aircraft Category Glider
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 2
Number of Engines --
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection May 24 1996 12:00AM
Airframe hours since last inspection 70
Airframe Hours 1612
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name NORTHWEST SOARING CLUB
Aircraft Owner Street Address P. O. BOX 88
Aircraft Owner City FRANKFORT
Aircraft Owner State MI
Aircraft Owner Country
Aircraft Owner Zipcode 49635
Operator is an individual? --
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? No
Certified for Part 133 or 137 Operation Unknown
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code 7Y2
Departure City
Departure State
Departure Country
Departure Time 1530
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code 3D4
Destination City FRANKFORT
Destination State MI
Destination Country
Specific Phase of Flight Takeoff
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:34AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 27
Runway Length 3000
Runway Width 150
Sight Seeing flight No
Air Medical Flight No
Medical Flight --