- Date
- September 23, 1986, 13:00 local (20:00 UTC)
- Place
- Deer Park, WA
- Injuries
- 1 fatal
- Damage
- Destroyed
- Phase of flight
- Approach
- Aircraft
- N4621NJerome Dodge B-8-M
- Weather
- Visual (VMC) · Day
- Status
- Completed
- Report
- Approved by Office Director
- FAA report
- 19860923046129A
- Case key
- 40309
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Airframe/component/system failure/malfunction
Flight controls - improper use ofCause
Design stress limits of aircraft - exceededCause
In flight collision with terrain/water
Analysis
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.
Aircraft
- Registration
- N4621N
- Reported as
- Jerome Dodge B-8-M
- Category
- Gyroplane, amateur-built
- Serial number
- 43146739
- Engine
- McCulloch 4318A, reciprocating
- Damage
- Destroyed
- Flight
- Personal · Part 91
- Registered owner
- Dana W. Dibble
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Annual · October 5, 1985
- Departed
- 07S · Deer Park, WA
- Airport
- 075 · Deer Park, runway 16, 6,100 × 75 ft, grass/turf
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 31
- Certificate
- Student
- Medical
- Class 3, Valid Medical--no waivers/lim.
- Seat
- Front
- Toxicology
- Performed
- Flight hours
- 69 total · 46 in this make and model · 50 as pilot in command · 6 in the last 90 days · 3 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 190° at 14 knots
- Visibility
- 20 statute miles
- Lowest ceiling
- 12,000 ft broken
- Temperature
- 63 °F, dew point 36 °F
- Altimeter
- 29.00 inHg
- Observed at
- SFF, 17 nm away
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.