Cessna U206F accident near Marshfiled, Massachusetts, October 29, 1986
On October 29, 1986 at about 7:30 am local time, a Cessna U206F, registered N9585G, was substantially damaged in an accident near Marshfiled, Massachusetts (Marshfield). It was a business flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- October 29, 1986 · about 7:30 am local time
- Place
- Marshfiled, Massachusetts · Marshfield
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna U206F · all U206Fs on the register
- Registration
- N9585G · registry record · serial U20601785
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
ELECTRICAL FAILURE OCCURRED IN FLIGHT DUE TO AN ALTERNATOR BELT FAILURE. THE ACFT LANDED IN THE GRASS BESIDE THE RWY AND WAS DAMAGED.THE LANDING WAS DIFFICULT DUE TO DARKNESS, FOG AND NO LIGHTS. THE PLT TRIED TO USE FLAPS BUT FAILED DUE TO NO ELEC POWER. THE LANDING WAS LONG AND OFF THE RWY DUE TO LACK OF VISIBILITY. THE NOSE WHEEL COLLAPSED DURING THE LANDING.
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
Pilot
- Certificate: private
- Ratings: single-engine land; instrument: airplane
- Flight time: 1,070 hours in all; 74 in this make and model; 60 in the last 90 days; 1,070 as pilot in command
- Medical certificate: Class 3 (valid medical--no waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 1,860 hours
- Last inspection: annual inspection, May 5, 1986; 63 hours since
- Maximum gross weight: 3,600 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental IO-520J (piston); 0 hours total
The flight
- Departed from: 4B9 Simsbury CT at 5:15 am
- Destination: Marshfield MA
- Flight plan: none
- Runway 6, 3,000 ft by 75 ft
Weather at the time
- Light: night, dark
- Sky: scat
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
- Altimeter: 30.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| 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.