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Accidents · NTSB SEA89LA175 · Final report

Bell 47G3B2 accident near Monitor, Washington, September 18, 1989

On September 18, 1989 at about 2:35 pm local time, a Bell 47G3B2 (helicopter), registered N83111, was destroyed in an accident near Monitor, Washington. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). 1 person was killed. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

THE PILOT FAILED TO MAINTAIN AIRCRAFT SEPARATION FROM OBSTACLES ON THE GROUND. A FACTOR IN THE ACCIDENT WAS THE BRIGHT GLARE FROM THE RISING SUN.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
September 18, 1989 · about 2:35 pm local time
Place
Monitor, Washington · map
Type
Accident
Injuries
1 person was killed.
Weather
visual conditions (good weather)
Aircraft
Bell 47G3B2 · all 47G3B2s on the register
Registration
N83111 · registry record · serial 6857
Damage
Destroyed
Flight
Aerial application (crop spraying) flight · agricultural flying rules (Part 137)

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

THE AIRCRAFT IMPACTED A 35 FT. HIGH WIND MACHINE WHILE THE PILOT WAS MAKING AN AERIAL APPLICATION SWATH RUN, SPRAYING AN APPLE ORCHARD. THE AIRCRAFT WAS TRAVELING TOWARD THE EAST, FACING A BRIGHT RISING MORNING SUN.

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: flight instructor, commercial pilot
  • Ratings: multi-engine land; single-engine land; single-engine sea; instructor: airplane multi-engine; instructor: airplane single-engine; instructor: instrument airplane; instrument: airplane; rotorcraft: helicopter
  • Flight time: 6,900 hours in all; 508 in this make and model
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 4,414 hours
  • Last inspection: annual inspection, June 15, 1989; 105 hours since
  • Maximum gross weight: 2,950 lb
  • Seats: 3
  • Landing gear: fixed
  • Engine: Lycoming TVO-435 (piston); 0 hours total
  • Fire on the ground

The flight

  • Departed from: Monitor WA at 1:30 pm
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 290° at 10 knots
  • Visibility: 30 statute miles
  • Sky: clear
  • Temperature: 54°F (12°C), dew point 41°F (5°C)
  • Altimeter: 29.00 inHg
  • Observation at 2:58 pm from EAT, 11 miles away

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.