Deer Park Airport
Aircraft Accident/Incident Report

Deer Park, Washington 99006
Tuesady, September 23, 1986 13:00 PDT

NTSB Narrative Summary Released at Completion of Accident

THE GYROCOPTER WAS OBSERVED OSCILLATING IN FLIGHT PRIOR TO DESCENDING TO GROUND IMPACT. INVESTIGATION REVEALED INFLIGHT CONTACT BETWEEN THE MAIN ROTOR AND VERTICAL FIN/PUSHER PROPELLER HAD TAKEN PLACE. NO MECHANICAL FAILURE WAS FOUND WHICH WOULD HAVE RESULTED IN THE CONTACT.

NTSB Probable Cause Narrative

Not Yet Reported

Event Information

Type of Event Accident
Event Date 9/23/1986
Event Day of the Week Tuesday
Time of Event 1300
Event Time Zone Pacific Daylight Time
Event City DEER PARK
Event State WASHINGTON
Event Country --
Zipcode of the event site 99006
Event Date Year 1986
Event Date Month 9
MidAir Collision Indicator No
On Ground Collision occurred ? No
Event Location Latitude
Event Location Longitude
Event Location Airport DEER PARK
Event Location Nearest Airport ID 075
Indicates whether the acc/inc occurred off or on an airport On Airport
Distance from airport in statute miles 0
Degrees magnetic from airport 0
Airport Elevation 2207
Weather Briefing Completeness Unknown
Investigator's weather source Weather Observation Facility
Time of the weather observation 1953 Z
Direction of event from weather observation facility (degrees) 145
Weather Observation Facility ID SFF
Elevation of weather observation facility 1953
Distance of event from weather observation facility (units?) 17
Time Zone of the weather observation Z
Lighting Conditions Day
Lowest Ceiling Height 12000
Lowest Non-Ceiling Height 12000
Sky/Lowest/Cloud Conditions Unknown
Sky Condition for Lowest Ceiling Broken
Visibility Runway Visual Range (Feet) 0
Visibility Runway Visual Value (Statute Miles) 0
Visibility (Statute Miles) 20
Air Temperature at event time (in degrees celsius) 17
Dew Point at event time (in degress fahrenheit) 2
Wind Direction (degrees magnetic) 190
Variable Wind Indicator Unknown
Wind Speed (knots) 14
Wind Velocity Indicator Unknown
Wind Gust Indicator Not Gusting
Wind Gust (knots) 0
Altimeter Setting at event time (in. Hg) 29
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 FAA
NTSB Docket Number (internal use) 2071
NTSB Notification Source --
NTSB Notification Date Sep 23 1986 12:00AM
NTSB Notification Time 1320
Fiche Number and/or location -used to find docket information 32605
Date of most recent change to record Jan 2 2001 9:14AM
User who most recently changed record dbo
Basic weather conditions Visual Meteorological Cond
FAA District Office --

Aircraft Involved

Aircraft #1

Aircraft Registration Number N4621N
NTSB Number SEA86FYE01
Missing Aircraft Indicator N
Federal Aviation Reg. Part Part 91: General Aviation
Type of Flight Plan filed None
Flight plan Was Activated? --
Damage Destroyed
Aircraft Fire None
Aircraft Explosion None
Aircraft Manufacturer's Full Name JEROME DODGE
Aircraft Model B-8-M
Aircraft Series Identifier B-8-M
Aircraft Serial Number 43146739
Certified Max Gross Weight 600
Aircraft Category Gyrocraft
Aircraft Registration Class U.S. Registered/U.S. Soil
Aircraft is a homebuilt? Yes
Flight Crew Seats --
Cabin Crew Seats --
Passenger Seats --
Total number of seats on the aircraft 1
Number of Engines 1
Fixed gear or retractable gear Fixed
Aircraft, Type of Last Inspection Annual
Date of Last Inspection Oct 5 1985 12:00AM
Airframe hours since last inspection --
Airframe Hours --
ELT Installed No
ELT Activated Unknown
ELT Aided Location of Event Site No
ELT Type --
Aircraft Owner Name DANA W. DIBBLE
Aircraft Owner Street Address E. 2311 BISMARK
Aircraft Owner City SOPKANE
Aircraft Owner State WA
Aircraft Owner Country
Aircraft Owner Zipcode 99207
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 Yes
Departure Airport Code 07S
Departure City DEER PARK
Departure State WA
Departure Country
Departure Time 1230
Departure Time Zone PDT
Destination Same as Local Flt crash at destination city
Destination Airport Code
Destination City
Destination State
Destination Country
Specific Phase of Flight Descent
Report sent to ICAO? --
Evacuation occurred --
Date of most recent change to record Jan 2 2001 10:36AM
User who most recently changed record dbo
Since inspection or accident --
Event Location Runway Number and Location 16
Runway Length 6100
Runway Width 75
Sight Seeing flight No
Air Medical Flight No
Medical Flight --