Aircraft Accident/Incident Report

Littlefield, Texas 79339
Wednesday, August 2, 1989 15:30 CDT

NTSB Narrative Summary Released at Completion of Accident

DURING A CROSS COUNTRY FLIGHT, THE SAILPLANE ENCOUNTERED SEVERE TURBULENCE. THE TURBULENCE WAS OF SUCH A LEVEL THAT THE STRUCTURAL INTEGRITY OF THE AIRCRAFT WAS COMPROMISED. THE PILOT WAS EQUIPPED WITH A PARACHUTE. HE BAILED OUT OF THE AIRCRAFT AT APPROXIMATELY 6500 FEET (MSL). THE AIRCRAFT WAS SUBSTANTIALLY DAMAGED DURING THE ENCOUNTER WITH TURBULENCE AND SUBSEQUENT GROUND CONTACT.

NTSB Probable Cause Narrative

IMPROPER PLANNING/DECISION BY THE PILOT & THE SEVERE TURBULENCE.

Event Information

Type of Event Accident
Event Date 8/2/1989
Event Day of the Week Wednesday
Time of Event 1530
Event Time Zone Central Daylight Time
Event City LITTLEFIELD
Event State TEXAS
Event Country --
Zipcode of the event site 79339
Event Date Year 1989
Event Date Month 8
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
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 0
Degrees magnetic from airport 0
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Pilot
Time of the weather observation 0
Direction of event from weather observation facility (degrees) 0
Weather Observation Facility ID
Elevation of weather observation facility 0
Distance of event from weather observation facility (units?) 0
Time Zone of the weather observation
Lighting Conditions Day
Lowest Ceiling Height 0
Lowest Non-Ceiling Height 4000
Sky/Lowest/Cloud Conditions Partial Obscuration
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 10
Air Temperature at event time (in degrees celsius) 32
Dew Point at event time (in degress fahrenheit) -18
Wind Direction (degrees magnetic) 270
Variable Wind Indicator Unknown
Wind Speed (knots) 20
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 60
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) 0
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Minor
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 1696
NTSB Notification Source --
NTSB Notification Date Aug 3 1989 12:00AM
NTSB Notification Time 730
Fiche Number and/or location -used to find docket information 40599
Date of most recent change to record Dec 18 2002 11:28AM
User who most recently changed record NTSB\GIUV
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N158WT
NTSB Number FTW89LA142
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 SCHEMPP-HIRTH
Aircraft Model CIRRUS
Aircraft Series Identifier CIRRUS
Aircraft Serial Number A29014
Certified Max Gross Weight 892
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 1
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 0
Airframe Hours --
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name ROBERT G. OLSON
Aircraft Owner Street Address 3822 WESTWICK DRIVE
Aircraft Owner City HOUSTON
Aircraft Owner State TX
Aircraft Owner Country
Aircraft Owner Zipcode 77082
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 No
Departure Airport Code Q00
Departure City LITTLEFIELD
Departure State TX
Departure Country
Departure Time 1330
Departure Time Zone CDT
Destination Same as Local Flt --
Destination Airport Code
Destination City ROUND-ROBIN
Destination State OF
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:35AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --