Deer Park Airport
Aircraft Accident/Incident Report

Deer Park, Washington 99006
Tuesady, July 9, 2002 20:30 PDT

NTSB Narrative Summary Released at Completion of Accident

The non-certified pilot was operating an unregistered experimental Cosmos Phase II Trike. A witness to the accident reported that the aircraft entered a left turn shortly after departing the runway. He reported that the aircraft reached an altitude of approximately 200 feet above ground level (AGL) and then began to descend. The aircraft continued a descending left turn until it impacted terrain. The witness reported that this was the pilot's first solo flight in the accident aircraft. During a telephone interview, the pilot reported that he was unable to recall any of the detailed events surrounding the accident.

NTSB Probable Cause Narrative

Loss of control for undetermined reasons.

Event Information

Type of Event Accident
Event Date 7/9/2002
Event Day of the Week Tuesday
Time of Event 2030
Event Time Zone Pacific Daylight Time
Event City Deer Park
Event State WASHINGTON
Event Country --
Zipcode of the event site 99006
Event Date Year 2002
Event Date Month 7
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude 475800N
Event Location Longitude 1172500W
Event Location Airport DEER PARK
Event Location Nearest Airport ID 07S
Indicates whether the acc/inc occurred off or on an airport Off Airport/Airstrip
Distance from airport in statute miles 1
Degrees magnetic from airport 340
Airport Elevation 2210
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 2053 Pacific Daylight Time
Direction of event from weather observation facility (degrees) --
Weather Observation Facility ID KDEW
Elevation of weather observation facility 1953
Distance of event from weather observation facility (units?) --
Time Zone of the weather observation PDT
Lighting Conditions Day
Lowest Ceiling Height --
Lowest Non-Ceiling Height --
Sky/Lowest/Cloud Conditions Clear
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) 24
Dew Point at event time (in degress fahrenheit) 13
Wind Direction (degrees magnetic) 20
Variable Wind Indicator Wind direction could be determined
Wind Speed (knots) 7
Wind Velocity Indicator --
Wind Gust Indicator Not Gusting
Wind Gust (knots) --
Altimeter Setting at event time (in. Hg) 29.83
Density Altitude (feet) --
Intensity of Precipitation --
METAR weather report --
Event Highest Injury Serious
On Ground, Fatal Injuries --
On Ground, Minor Injuries --
On Ground, Serious Injuries --
Injury Total Fatal --
Injury Total Minor --
Injury Total None --
Injury Total Serious 1
Injury Total All 1
Investigating Agency NTSB
NTSB Docket Number (internal use) 12897
NTSB Notification Source FAA-REGIONAL OPERATIONS
NTSB Notification Date Jul 9 2002 12:00AM
NTSB Notification Time 2108
Fiche Number and/or location -used to find docket information DMS
Date of most recent change to record Apr 15 2003 4:03PM
User who most recently changed record NTSB\MONR
Basic weather conditions Visual Meteorological Cond
FAA District Office Spokane, Washington

Aircraft Involved

Aircraft #1

Aircraft Registration Number None
NTSB Number SEA02LA126
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 Cosmos
Aircraft Model Phase II
Aircraft Series Identifier --
Aircraft Serial Number --
Certified Max Gross Weight 900
Aircraft Category Airplane
Aircraft Registration Class Not Registered
Aircraft is a homebuilt? Yes
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 --
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 Donald Vanderhoof
Aircraft Owner Street Address --
Aircraft Owner City Fairbanks
Aircraft Owner State AK
Aircraft Owner Country USA
Aircraft Owner Zipcode 99712
Operator is an individual? No
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? --
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) Personal
Second Pilot on Board No
Departure Point Same as Event Yes
Departure Airport Code DEW
Departure City Deer Park
Departure State WA
Departure Country USA
Departure Time 2030
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 Climb
Report sent to ICAO? No
Evacuation occurred No
Date of most recent change to record Dec 30 2002 7:00PM
User who most recently changed record STAM
Since inspection or accident --
Event Location Runway Number and Location 14
Runway Length 34
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --