Bell 206B3 accident near Livengood, Alaska, March 10, 1986
On March 10, 1986 at about 4:55 pm local time, a Bell 206B3 (helicopter), registered N9AT, was substantially damaged in an accident near Livengood, Alaska. It was an other work-use flight under general aviation rules (Part 91). No one was hurt; 2 people were 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
- March 10, 1986 · about 4:55 pm local time
- Place
- Livengood, Alaska
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Bell 206B3 · all 206B3s on the register
- Registration
- N9AT · no longer on the register · serial 003854
- Damage
- Substantial damage
- Flight
- Other work-use flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
HELICOPTER EXPERIENCED POWER LOSS WHILE FLYING LOW LEVEL PIPELINE PATROL, RESULTING IN A HARD LANDING AND SUBSTANTIAL DAMAGE TO THE ACFT. THE GOVERNING PRESSURE (PG) AIR LINE FITTING WAS FOUND LOOSE ON THE POWER TURBINE FUEL GOVERNOR.
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: airline transport pilot
- Ratings: instrument: helicopter; rotorcraft: helicopter
- Flight time: 11,159 hours in all; 5,083 in this make and model; 300 in the last 90 days; 114 in the last 30 days; 10,784 as pilot in command
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: rgt
The aircraft
- Airframe total time: 2,236 hours
- Last inspection: approved inspection programme, March 2, 1986; 53 hours since
- Maximum gross weight: 3,200 lb
- Seats: 5
- Landing gear: fixed
- Engine: Allison 250-C20J (turboshaft); 0 hours total
- Operator: Air Logistics Of Alaska
The flight
- Departed from: Pump Station #7 AK at 4:53 pm
- Destination: MTF Fairbanks AK
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 030° at 10 knots
- Visibility: 100 statute miles
- Sky: clear
- Temperature: 5°F (-15°C), dew point 0°F (-18°C)
- Altimeter: 29.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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.