- Date
- February 9, 1989, 09:05 local (13:05 UTC)
- Place
- Fairbanks, AK
- Injuries
- 1 fatal
- Damage
- Destroyed
- Phase of flight
- Enroute
- Aircraft
- N756EACessna U206G
- Weather
- Visual (VMC) · Day
- Status
- Completed · report January 22, 1991
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- FAA report
- 19890209001979A
- Case key
- 5099
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
Separation of the torsional vibration dampers from the crankshaft boss.
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.
Analysis
During flight, the pilot reported an engine failure. Subsequently, the airplane crashed as it was landed in a stand of pine trees. An exam of the engine revealed that one of the rear torsion vibration dampers had separated from the crankshaft boss. There was evidence that this resulted in massive internal engine damage & a subsequent loss of power.
Aircraft
- Registration
- N756EA
- Reported as
- Cessna U206G
- Category
- Airplane
- Serial number
- U206044021
- Airframe hours
- 3,830
- Engine
- Continental IO-520-F, 300 horsepower, reciprocating
- Damage
- Destroyed
- Flight
- Part 135
- Operator
- Arctic Circle Air Service Inc
- Registered owner
- Constance & Ralph C. Seekins
- Airworthiness certificate
- Standard, Normal
- Last inspection
- 100 hour · November 1, 1988 · 230 hours before
- Departed
- FAI · Fairbanks, AK
- Destination
- FYU · Fort Yukon, AK
- Flight plan
- Company VFR
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 27
- Certificates
- Commercial, Flight instructor
- Airplane ratings
- Single-engine land, Multi-engine land, Single-engine sea
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--no waivers/lim.
- Seat
- Left
- Toxicology
- Performed
- Flight hours
- 2,500 total · 600 in this make and model · 2,150 as pilot in command · 193 in the last 90 days · 45 in the last 30 days · 5 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 180° at 5 knots
- Visibility
- 90 statute miles
- Lowest ceiling
- 6,000 ft broken
- Temperature
- 30 °F
- Altimeter
- 30.00 inHg
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.