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Accidents · NTSB SEA83LA069 · Preliminary: the investigation is not finished

Continental Copters MKIII accident near Pasco, Washington, April 1, 1983

On April 1, 1983 at about 5:30 pm local time, a Continental Copters MKIII (helicopter), registered N73865, was substantially damaged in an accident near Pasco, Washington (Pasco airport). It was a positioning flight under general aviation rules (Part 91). No one was hurt; 1 person was 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
April 1, 1983 · about 5:30 pm local time
Place
Pasco, Washington · Pasco · map
Type
Accident
Injuries
No one was hurt; 1 person was on board or involved.
Weather
visual conditions (good weather)
Aircraft
Continental Copters MKIII
Registration
N73865 · no longer on the register · serial 007
Damage
Substantial damage
Flight
Positioning flight · general aviation rules (Part 91)

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

WHILE REPOSITIONING THE HELICOPTER FROM THE GROUND ONTO A TRAILER THE ACFT ROLLED OVER WHEN THE RIGHT SKID CAUGHT ONTO THE TRAILER.

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: multi-engine land; single-engine land; instrument: airplane
  • Flight time: 10,472 hours in all; 4 in this make and model; 34 in the last 90 days; 20 in the last 30 days; 10,472 as pilot in command
  • Medical certificate: Class 2 (valid medical--no waivers/lim.)
  • Seat: rgt

The aircraft

  • Airframe total time: 444 hours
  • Last inspection: annual inspection, February 21, 1983; 0 hours since
  • Maximum gross weight: 2,790 lb
  • Seats: 3
  • Landing gear: retractable
  • Engine: Franklin 6V350-A (piston); 0 hours total
  • Operator: Aero Air

The flight

  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Visibility: 50 statute miles
  • Sky: overcast at 18,000 ft; scat at 12,000 ft
  • Temperature: 52°F (11°C), dew point 39°F (4°C)
  • Altimeter: 30.00 inHg
  • Observation at 5:45 pm from PSC

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.

Other NTSB records under N73865 the same tail number, which may have belonged to a different aircraft at the time

1991-09-12SEA91LA233 · accident near Miltonfreewater, OR · substantial damage · minor injuries

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.