Cessna TU206G N6620Z
18 August 1997 · Edwall, Washington, United States · No injuries
Summary
On 18 August 1997 at about 20:00 local time, a Cessna TU206G registered N6620Z was involved in an accident near Edwall, Washington, United States. 2 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.
The record
- Date
- at 20:00
- Classification
- Accident
- Location
- Edwall, Washington, United States
- Coordinates
- 47.5110, -117.9200
- Aircraft
- Cessna TU206G
- Registration
- N6620Z
- Category
- Airplane
- Engines
- 1
- Operator
- Not recorded
- Operating rule
- Part 91: General Aviation
- Purpose of flight
- Personal
- Phase of flight
- Not recorded
- Route
- Spokane → Moses Lake
- Aircraft damage
- Substantial
- Weather
- VMC
- Light
- Day
- NTSB number
- SEA97LA193
People
Nobody was injured.
| On board | Died | Serious | Minor | Uninjured |
|---|---|---|---|---|
| 2 | 0 | 0 | 0 | 2 |
Probable cause
A fatigue failure of the engine crankshaft. Factors contributing to the accident were the rolling terrain, and the fence.
Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.
Read the full NTSB narrative
The private pilot stated that during climb, about 10 minutes after takeoff, he felt a strong vibration in the engine, followed by an abrupt engine stoppage a few seconds later. During the subsequent forced landing onto rolling terrain that was surrounded by obstructions, the airplane struck a fence post, hit a ditch, and flipped over. An examination of the engine revealed that the crankshaft had fractured. The fracture was the result of fatigue cracking that initiated at the surface of the aft radius of the no. 2 main bearing journal. Heavy rubbing damage in the aft radius indicated that the bearing shifted aft and scored the radius resulting in fatigue initiation at the surface. A visual inspection of the crankcase mating surfaces revealed fretting, indicating that there was relative motion between the two crankcase halves. No evidence of heat distress or lack of lubrication was found. The engine, a Continental TSIO-520, had received a 'top' overhaul about 45 operating hours before the accident.
Quoted verbatim from the NTSB record.
Other Cessna TU206G accidents
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 27 Jun 1997 | Cessna TU206G | Halls Crossing, Utah, United States | - | Minor injuries | - |
| 25 Jul 1998 | Cessna TU206G | Midvale, Utah, United States | - | No injuries | - |
| 8 Dec 1996 | Cessna TU206G | Mammoth Lakes, California, United States | - | No injuries | - |
| 29 Jul 1998 | Cessna TU206G | Burns, Oregon, United States | BLM | Minor injuries | - |
| 17 Nov 1999 | Cessna TU206G | Lafayette, Louisiana, United States | - | No injuries | - |
| 3 Mar 1999 | Cessna TU206G | Cascade, Idaho, United States | - | No injuries | - |
Other accidents in this area
| Date | Aircraft | Location | Operator | Outcome | Died |
|---|---|---|---|---|---|
| 28 Sep 1997 | Piper PA-32-300 | Stuart Island, Washington, United States | - | No injuries | - |
| 13 Dec 1997 | Aero Commander 690A | Yakima, Washington, United States | - | Fatal | 2 |
| 19 Oct 1997 | Piper PA-28-151 | Vashon, Washington, United States | - | No injuries | - |
| 15 Nov 1997 | Piper PA-18-150 | Battle Ground, Washington, United States | - | Serious injuries | - |
| 1 Dec 1997 | Aero Commander 112 | Kettle Falls, Washington, United States | - | Fatal | 3 |
| 10 Dec 1997 | Cessna 150J | Silverdale, Washington, United States | Alternate Air Flying Club | No injuries | - |