Aircraft Accident/Incident Report

Bend, Oregon 97702
Monday, June 27, 1994 15:34 PDT

NTSB Narrative Summary Released at Completion of Accident

WITNESSES OBSERVED THE MOTORIZED GLIDER MAKING LOW-LEVEL STEEP TURNS AND PORPOISING-TYPE MANEUVERS OVER THE PILOT'S PROPERTY AND NEAR A FAMILY MEMBER'S HOUSE. THE LEFT WING AND NOSE THEN DROPPED, AND THE GLIDER IMPACTED THE GROUND. TOXICOLOGICAL TESTS WERE POSITIVE FOR TETRAHYDROCANNABINOL (MARIHUANA) (0.002 UG/ML BLOOD), THC CARBOXYLIC ACID (MARIHUANA) (0.012 UG/ML BLOOD, 0.158 UG/ML URINE), ALPRAZOLAM (0.035 UG/ML BLOOD), DIAZEPAM (0.207 UG/ML BLOOD), AND NORDIAZEPAM (0.305 UG/ML BLOOD).

NTSB Probable Cause Narrative

THE PILOT'S IMPAIRMENT OF JUDGMENT AND PERFORMANCE DUE TO DRUGS, WHICH LED TO HIS FAILURE TO MAINTAIN CONTROL OF THE AIRCRAFT.

Event Information

Type of Event Accident
Event Date 6/27/1994
Event Day of the Week Monday
Time of Event 1534
Event Time Zone Pacific Daylight Time
Event City BEND
Event State OREGON
Event Country --
Zipcode of the event site 97702
Event Date Year 1994
Event Date Month 6
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 --
Degrees magnetic from airport --
Airport Elevation --
Weather Briefing Completeness Unknown
Investigator's weather source Witness
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) 30
Air Temperature at event time (in degrees celsius) --
Dew Point at event time (in degress fahrenheit) --
Wind Direction (degrees magnetic) 0
Variable Wind Indicator Unknown
Wind Speed (knots) 0
Wind Velocity Indicator Unknown
Wind Gust Indicator Unknown
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) --
Density Altitude (feet) --
Intensity of Precipitation Unknown
METAR weather report --
Event Highest Injury Fatal
On Ground, Fatal Injuries 0
On Ground, Minor Injuries 0
On Ground, Serious Injuries 0
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) 977
NTSB Notification Source --
NTSB Notification Date Jun 27 1994 12:00AM
NTSB Notification Time 1650
Fiche Number and/or location -used to find docket information IMAGE
Date of most recent change to record Dec 6 2000 11:31AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N109KM
NTSB Number SEA94LA156
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 BURKHART GROB
Aircraft Model G-109B
Aircraft Series Identifier G-109B
Aircraft Serial Number 6356
Certified Max Gross Weight 700
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 1
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 Unknown
ELT Activated Unknown
ELT Aided Location of Event Site Unknown
ELT Type --
Aircraft Owner Name CENTRAL OREGON SOARING INC.
Aircraft Owner Street Address 62075 TORKELSON RD
Aircraft Owner City BEND
Aircraft Owner State OR
Aircraft Owner Country
Aircraft Owner Zipcode 97702
Operator is an individual? --
Operator Name CENTRAL OREGON SOARING INC.
Operator Same as Owner? No
Operator Is Doing Business As --
Operator Address Same as Owner? No
Operator Street Address 62075 TORKELSON RD
Operator City BEND
Operator State OR
Operator Country
Operator Zip code 97702
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 0
Departure Time Zone
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 Maneuvering
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 --