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Accidents · NTSB SEA86LA030 · Preliminary: the investigation is not finished

Bell 47G-3B accident near Kimberly, Idaho, December 12, 1985

On December 12, 1985 at about 11:15 pm local time, a Bell 47G-3B (helicopter), registered N73208, was substantially damaged in an accident near Kimberly, Idaho. It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured; 1 other was unhurt. 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
December 12, 1985 · about 11:15 pm local time
Place
Kimberly, Idaho · map
Type
Accident
Injuries
1 person was seriously injured; 1 other was unhurt.
Weather
visual conditions (good weather)
Aircraft
Bell 47G-3B · all 47G-3Bs on the register
Registration
N73208 · no longer on the register · serial 2745
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

The NTSB's narrative final · quoted from the NTSB record

A FORCED LANDING WITH A ROLLOVER ONTO SNOW OCCURRED DUE TO THE NUMBER 3 CYLINDER ROD FAILING.

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, commercial pilot
  • Ratings: single-engine land; instructor: airplane single-engine; instrument: airplane; rotorcraft: helicopter
  • Flight time: 2,551 hours in all; 737 in this make and model; 50 in the last 90 days
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 3,900 hours
  • Last inspection: 100-hour inspection, March 22, 1985; 90 hours since
  • Maximum gross weight: 2,950 lb
  • Seats: 3
  • Landing gear: fixed
  • Engine: Lycoming TV0-435 SER (piston); 0 hours total

The flight

  • Departed from: NONE Kimberly ID at 11:00 pm
  • Destination: Shohone Basin ID
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 10 statute miles
  • Sky: overcast at 3,000 ft; not recorded
  • Temperature: 3°F (-16°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Crew1
Passengers1

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.