Amateur-built ROTORWAY 162 accident near Graysville, Tennessee, July 27, 2008
On July 27, 2008 at about 8:20 pm local time, a amateur-built ROTORWAY 162 (helicopter), registered N412TS, was destroyed in an accident during maneuvering near Graysville, Tennessee. It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
A loss of control for undetermined reasons.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 27, 2008 · about 8:20 pm local time
- Place
- Graysville, Tennessee · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built ROTORWAY 162
- Registration
- N412TS · registry record · serial TS6578
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
The amateur-built helicopter had flown 57 hours since new. The new owner performed a detailed preflight inspection and repetitive run up checks prior to departure, with no mechanical anomalies noted. After takeoff, the pilot climbed to about 600 feet above the ground, flew straight for approximately 2 miles, then turned to the left. During the turn, the pilot noted a low frequency vibration, and an "unusual back pressure on the cyclic." Coming out of the turn, back pressure to the cyclic increased. Indicated airspeed was 75 mph, and all gauges were "in the green." As the helicopter continued straight and level, back pressure continued to increase, requiring more forward cyclic to maintain airspeed and level flight. The pilot climbed, and turned back toward the departure point. After the turn, the helicopter initiated an uncommanded nose up attitude and rolled to the left, with the nose then dropping so low that the pilot was looking at the ground. The pilot arrested the turn utilizing collective and throttle, and by "forcibly" pulling and pushing on the cyclic as needed. He then performed a "quasi-controllable" autorotation to the ground, landing on the skids, heading down-slope on a hill, with no forward or side motion. The helicopter subsequently rolled over on its right side, and fuel ignited as the pilot exited through the broken windshield. Due to the helicopter being consumed in the postcrash fire, a thorough examination was not possible.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Flight control sys malf/fail during maneuvering defining event
The NTSB's findings
- cause Not determined › Not determined › (general) › (general) › Unknown/Not determined
Pilot
- Certificate: private
- Ratings: rotorcraft: helicopter
- Flight time: 88 hours in all; 17 in this make and model; 17 in the last 90 days; 7 in the last 30 days; 20 as pilot in command
- Last flight review: February 14, 2008
- Medical certificate: Class 3
- Seat: left
- Injury: serious injuries
The aircraft
- Airframe total time: 57 hours
- Last inspection: condition inspection, May 13, 2008; 7 hours since
- Maximum gross weight: 1,500 lb
- Seats: 2
- Landing gear: fixed
- Engine: Rotorway RI 162F (piston); 0 hours total
- Fire on the ground
The flight
- Departed from: NONE Dayton TN at 8:00 pm
- Destination: NONE Dayton TN
- Flight plan: not recorded
Weather at the time
- Light: daylight
- Wind: at 3 knots
- Visibility: 10 statute miles
- Sky: scat at 5,000 ft
- Temperature: 91°F (33°C), dew point 68°F (20°C)
- Altimeter: 29.17 inHg
- Observation at 7:53 pm from CHA, 20 miles away
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.
