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Accidents · NTSB CHI84LA245 · Preliminary: the investigation is not finished

Bell 47-G2 accident near Nimrod, Minnesota, June 18, 1984

On June 18, 1984, a Bell 47-G2 (helicopter), registered N18JM, was destroyed in an accident near Nimrod, Minnesota. 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

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
June 18, 1984
Place
Nimrod, Minnesota
Type
Accident
Injuries
1 person was seriously injured.
Weather
visual conditions (good weather)
Aircraft
Bell 47-G2 · all 47-G2s on the register
Registration
N18JM · registry record · serial 2334
Damage
Destroyed
Flight
Personal flight · general aviation rules (Part 91)

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

WHILE LANDING IN AN AREA OF TALL GRASS A SKID COLLIDED WITH A SAND RIDGE CAUSING A ROLL OVER.

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: instrument: helicopter; rotorcraft: helicopter
  • Flight time: 215 in this make and model
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: unk

The aircraft

  • Airframe total time: 1,258 hours
  • Last inspection: inspection type not recorded
  • Maximum gross weight: 2,450 lb
  • Seats: 3
  • Landing gear: fixed
  • Engine: Lycoming VO-435-A1B (piston); 0 hours total

The flight

  • Departed from: Nimrod MN
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 330° at 8 knots
  • Visibility: 12 statute miles
  • Sky: broken clouds at 1,500 ft; scat at 700 ft
  • Temperature: 75°F (24°C), dew point 70°F (21°C)
  • Altimeter: 29.00 inHg

Injuries

FatalSeriousMinorNone
Crew1

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.