Horizon Airport
Aircraft Accident/Incident Report

El Paso, Texas 79927
Saturday, September 1, 2012 11:00 MDT

NTSB Narrative Summary Released at Completion of Accident

The glider club was launching gliders via a mechanical ground winch. On the first launch attempt, the glider overflew the tow cable and it automatically disconnected when the glider was low to the ground. The glider was able to make a safe landing on the runway. The pilot was overheard saying that the first launch failed because he should have initiated the climb sooner. On the second attempt, the glider once again overran the tow cable. Before the tow cable released, the pilot lowered the nose to pick up the slack in the cable and he instructed the winch operator to go faster. These two steps appeared to have corrected the problem, and the pilot initiated a climb. Shortly after, the glider began to overfly the cable again and it disconnected. The glider entered free flight just above stall speed about 75 feet above the runway. A witness saw the glider nose over and thought the pilot was going to land. Instead, the glider descended rapidly and drifted to the left toward a taxiway. The witness saw the wings of the glider rock back and forth before it impacted the ground hard. Examination of the glider and release hook revealed no mechanical anomalies. The ground winch's engine was reportedly running rough and most likely was unable to produce enough speed to launch the glider.

NTSB Probable Cause Narrative

The pilot‘s failure to maintain glider control while attempting to take off using a ground winch, which resulted in an inadvertent stall low to the ground. Contributing to the accident was the ground winch, which was unable to produce enough speed for a successful glider launch.

Event Information

Type of Event Accident
Event Date 9/1/2012
Event Day of the Week Saturday
Time of Event 1100
Event Time Zone Mountain Daylight Time
Event City El Paso
Event State TEXAS
Event Country --
Zipcode of the event site 79927
Event Date Year 2012
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 314307N
Event Location Longitude 1061407W
Event Location Airport Horizon Airport
Event Location Nearest Airport ID T27
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 4007
Weather Briefing Completeness --
Investigator's weather source Unknown
Time of the weather observation 1051 Mountain Daylight Time
Direction of event from weather observation facility (degrees) 330
Weather Observation Facility ID ELP
Elevation of weather observation facility 4007
Distance of event from weather observation facility (units?) 9
Time Zone of the weather observation MDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling --
Visibility Runway Visual Range (Feet) --
Visibility Runway Visual Value (Statute Miles) --
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 30
Dew Point at event time (in degress fahrenheit) 6
Wind Direction (degrees magnetic) 150
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 4
Wind Velocity Indicator --
Wind Gust Indicator --
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 30.16
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal 1
Injury Total Minor --
Injury Total None --
Injury Total Serious --
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 31241
NTSB Notification Source ABQ FSDO
NTSB Notification Date --
NTSB Notification Time --
Fiche Number and/or location -used to find docket information --
Date of most recent change to record Jun 5 2013 2:12PM
User who most recently changed record johb
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N5489X
NTSB Number CEN12LA605
Missing Aircraft Indicator --
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? No
Damage Substantial
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name BURKHART GROB
Aircraft Model G 103 TWIN II
Aircraft Series Identifier --
Aircraft Serial Number 3877-K-115
Certified Max Gross Weight --
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 2
Number of Engines 0
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Unknown
Date of Last Inspection --
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated No
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name EL PASO SOARING SOCIETY INC
Aircraft Owner Street Address --
Aircraft Owner City EL PASO
Aircraft Owner State TX
Aircraft Owner Country USA
Aircraft Owner Zipcode 79928-5608
Operator is an individual? No
Operator Name EL PASO SOARING SOCIETY INC
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address --
Operator City EL PASO
Operator State TX
Operator Country USA
Operator Zip code 79928-5608
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) Glider Tow
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code T27
Departure City El Paso
Departure State TX
Departure Country USA
Departure Time 1300
Departure Time Zone MDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code T27
Destination City El Paso
Destination State TX
Destination Country USA
Specific Phase of Flight --
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Apr 22 2013 12:02PM
User who most recently changed record yeal
Since inspection or accident --
Event Location Runway Number and Location 08
Runway Length 6885
Runway Width 50
Sight Seeing flight No
Air Medical Flight No
Medical Flight --