Bell 206L-1 accident near Pendleton, Oregon, December 4, 1986
On December 4, 1986 at about 1:32 am local time, a Bell 206L-1 (helicopter), registered N7EC, was destroyed in an accident near Pendleton, Oregon. It was a flight of an unrecorded kind under charter and air-taxi rules (Part 135). 3 people were killed. The weather was instrument conditions (cloud, fog or low visibility).
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
- December 4, 1986 · about 1:32 am local time
- Place
- Pendleton, Oregon · map
- Type
- Accident
- Injuries
- 3 people were killed.
- Weather
- instrument conditions (cloud, fog or low visibility)
- Aircraft
- Bell 206L-1 · all 206L-1s on the register
- Registration
- N7EC · registry record · serial 45511
- Damage
- Destroyed
- Flight
- Flight of an unrecorded kind · charter and air-taxi rules (Part 135)
The NTSB's narrative final · quoted from the NTSB record
THE HELICOPTER DEPARTED PENDLETON ON AN EMERG MED SVC/MED-EVAC (EMS) FLT TO TRANSPORT A PATIENT TO PORTLAND. AFTER DELIVERING THE PATIENT, THE PLT TOOK OFF ON THE RTN FLT WITH 2 MED PSNL ABOARD. DRG ARRIVAL AT 1658 PST, HE REQUESTED A SPECIAL VFR (SVFR) CLEARANCE TO THE PENDLETON ARPT. THE PLT WAS ADVISED TO HOLD & EXPECT CLEARANCE AT ABOUT 1725. AFTER INBOUND TRAFFIC HAD LANDED, A SVFR CLEARANCE WAS ISSUED. ABOUT 5 MIN LATER, THE PLT TRANSMITTED A MAYDAY CALL THAT HE HAD 'INADVERTENT IFR' & WAS NOT CAPABLE OF IFR FLT. AT 1732, THE LAST TRANSMISSION FROM THE PLT STATED HE WAS AT2200 FT MSL 'APPROXIMATELY 5.1 NM FROM . . .' SUBSEQUENTLY, THE HELICOPTER IMPACTED THE GROUND ABOUT 5 MI WEST OF THE ARPT, WHILE DSCNDG IN A RT BANK. NO PREIMPACT PART FAILURE/MALFUNCTION WAS FND; RPRTDLY, THE HELICOPTER HAD DEPARTED PORTLAND WITH THE OIL TEMP GAGE INOP, TRANSPONDER REMOVED & A LEAK IN THE PITOT STATIC SYS. AT PENDLETON, THE 1650 PST WX WAS IN PART: 700 FT OVERCAST, VIS 3 MI WITH FOG. THE PLT WAS NOT CERTIFICATED FOR INSTRUMENT FLT IN HELICOPTERS.
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: commercial pilot
- Ratings: single-engine land; instructor: helicopter; instrument: airplane; rotorcraft: helicopter
- Flight time: 4,650 hours in all; 1,450 in this make and model; 15 in the last 90 days; 7 in the last 30 days; 4,600 as pilot in command; 1,000 on instruments
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: rgt
The aircraft
- Airframe total time: 1,733 hours
- Last inspection: 100-hour inspection, September 15, 1986; 65 hours since
- Maximum gross weight: 4,150 lb
- Seats: 5
- Landing gear: fixed
- Engine: Allison 250-C30P (turboshaft); 0 hours total
The flight
- Departed from: Portland OR at 11:00 pm
- Runway 0
Weather at the time
- Light: night, dark
- Wind: from 100° at 4 knots
- Visibility: 3 statute miles
- Sky: overcast at 700 ft; not recorded
- Temperature: 32°F (0°C), dew point 30°F (-1°C)
- Altimeter: 30.00 inHg
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 3 |
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.