Aircraft Accident/Incident Report

Avenal, California 93204
Wednesday, May 26, 1993 14:45 PDT

NTSB Narrative Summary Released at Completion of Accident

THE GLIDER ENCOUNTERED EXTENSIVE TURBULENCE AND DOWNDRAFTS WHILE RETURNING TO THE GLIDER PORT. THE PILOT ELECTED TO LAND IN AN OPEN FIELD. WHILE TURNING ONTO THE BASE LEG FOR THE LANDING THE GLIDER ENCOUNTERED A SEVERE DOWNDRAFT. THE PILOT OBSERVED SOME POWERLINES AND DOVE THE GLIDER BENEATH THEM. WHILE DIRECTLY UNDER THE POWERLINES THE PILOT OBSERVED A 3-FT BARBEDWIRE FENCE. WHEN THE PILOT RAISED THE GLIDER'S PITCH ATTITUDE TO AVOID HITTING THE FENCE, THE GLIDER'S RIGHT WING RAISED AND STRUCK THE POWERLINES. THE PILOT DID NOT REPORT ENCOUNTERING ANY PREEXISTING MALFUNCTIONS OR FAILURES.

NTSB Probable Cause Narrative

THE GLIDER'S ENCOUNTER WITH THE DOWNDRAFT. CONTRIBUTING TO THIS ACCIDENTS WERE THE TURBULENCE AND THE POWERLINES.

Event Information

Type of Event Accident
Event Date 5/26/1993
Event Day of the Week Wednesday
Time of Event 1445
Event Time Zone Pacific Daylight Time
Event City AVENAL
Event State CALIFORNIA
Event Country --
Zipcode of the event site 93204
Event Date Year 1993
Event Date Month 5
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 0
Sky/Lowest/Cloud Conditions Clear
Sky Condition for Lowest Ceiling None
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 15
Air Temperature at event time (in degrees celsius) 29
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 210
Variable Wind Indicator Unknown
Wind Speed (knots) 20
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 25
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
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) 241
NTSB Notification Source --
NTSB Notification Date May 26 1993 12:00AM
NTSB Notification Time 1750
Fiche Number and/or location -used to find docket information 52305
Date of most recent change to record Dec 11 2000 1:19PM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N6644A
NTSB Number LAX93LA228
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 WSK PZL
Aircraft Model KR-03A
Aircraft Series Identifier KR-03A
Aircraft Serial Number 03/04
Certified Max Gross Weight 1190
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 0
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection 100 Hour
Date of Last Inspection May 8 1993 12:00AM
Airframe hours since last inspection 13
Airframe Hours 132
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name KULBETH, JOSEPH
Aircraft Owner Street Address 2539 10TH AVENUE
Aircraft Owner City KINGSBURG
Aircraft Owner State CA
Aircraft Owner Country
Aircraft Owner Zipcode 93631
Operator is an individual? --
Operator Name KULBETH, JOSEPH
Operator Same as Owner? Yes
Operator Is Doing Business As --
Operator Address Same as Owner? Yes
Operator Street Address 2539 10TH AVENUE
Operator City KINGSBURG
Operator State CA
Operator Country
Operator Zip code 93631
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
Departure City
Departure State
Departure Country
Departure Time 1400
Departure Time Zone PDT
Destination Same as Local Flt dest & departure same, accident can occur anywhere
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Approach
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 0
Runway Length --
Runway Width --
Sight Seeing flight No
Air Medical Flight No
Medical Flight --