Aircraft Accident/Incident Report

Athens, Tennessee 37303
Saturday, May 7, 2011 15:15 EDT

NTSB Narrative Summary Released at Completion of Accident

While participating in a soaring competition, the pilot of the glider realized that a layer of high cirrus clouds had moved into the area and had stopped the heating of the ground by the sun. The thermal activity began to get progressively weaker and the pilot began to look for a place to make an off-airport landing. He observed a mowed hay field, did not see any obstructions, and chose it for his landing site. After turning on final approach with the wing flaps and spoilers extended, the glider struck two electrical transmission lines that were running diagonally across the glidepath, about 15 feet above ground level. The airplane sustained substantial damage to the fuselage and wing during the impact with the wires.

NTSB Probable Cause Narrative

The pilot's inadequate visual lookout resulting in a collision with power lines while making an off-airport landing.

Event Information

Type of Event Accident
Event Date 5/7/2011
Event Day of the Week Saturday
Time of Event 1515
Event Time Zone Eastern Daylight Time
Event City Athens
Event State TENNESSEE
Event Country --
Zipcode of the event site 37303
Event Date Year 2011
Event Date Month 5
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 352352N
Event Location Longitude 0844523W
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 1453 Eastern Daylight Time
Direction of event from weather observation facility (degrees) 45
Weather Observation Facility ID TYS
Elevation of weather observation facility 981
Distance of event from weather observation facility (units?) 38
Time Zone of the weather observation EDT
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) 10
Air Temperature at event time (in degrees celsius) 21
Dew Point at event time (in degress fahrenheit) 8
Wind Direction (degrees magnetic) 230
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 11
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.99
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor 1
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 28593
NTSB Notification Source FAA Operations Center
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jun 17 2011 11:55AM
User who most recently changed record kenj
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N27LX
NTSB Number ERA11CA288
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 SCHLEICHER
Aircraft Model ASW-27
Aircraft Series Identifier --
Aircraft Serial Number 27074
Certified Max Gross Weight 1102
Aircraft Category Glider
Aircraft Registration Class --
Aircraft is a homebuilt? No
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 0
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Conditional
Date of Last Inspection Apr 10 2011 12:00AM
Airframe hours since last inspection --
Airframe Hours 1309
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name MARTIN DAVID V TRUSTEE
Aircraft Owner Street Address 15164 PARADISE VIEW DR
Aircraft Owner City WILLIS
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 77318-3200
Operator is an individual? Yes
Operator Name David V. Martin
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City WILLIS
Operator State TX
Operator Country USA
Operator Zip code 77318-3200
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) Air Race/Show
Second Pilot on Board No
Departure Point Same as Event No
Departure Airport Code 92A
Departure City Benton
Departure State TN
Departure Country USA
Departure Time 1245
Departure Time Zone EDT
Destination Same as Local Flt --
Destination Airport Code 2A0
Destination City Dayton
Destination State TN
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jun 17 2011 11:55AM
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 --