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Accidents · NTSB SEA85LA081 · Preliminary: the investigation is not finished

Piper PA-28-180 accident near Trinidad, Washington, March 30, 1985

On March 30, 1985 at about 9:30 pm local time, a Piper PA-28-180, registered N772GW, was substantially damaged in an accident near Trinidad, Washington. It was a personal flight under general aviation rules (Part 91). 1 person was killed; 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
March 30, 1985 · about 9:30 pm local time
Place
Trinidad, Washington · map
Type
Accident
Injuries
1 person was killed; 1 other was unhurt.
Weather
visual conditions (good weather)
Aircraft
Piper PA-28-180 · all PA-28-180s on the register
Registration
N772GW · no longer on the register · serial 282554
Damage
Substantial damage
Flight
Personal flight · general aviation rules (Part 91)

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

THE PILOT WAS OPERATING THE AIRCRAFT BY FLYING AT LOW ALTITUDE DOWN THE COLUMBIA RIVER SO AS TO AVOID TURBULENCE. DURING THE FLIGHT A DOWNDRAFT WAS ENCOUNTERED IN WHICH INSUFFICIENT ALTITUDE WAS AVAILABLE TO PREVENT THE WATER AND AN UNINTENTIONAL DITCHING RESULTED.

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; single-engine sea
  • Flight time: 528 hours in all; 300 in this make and model; 4 in the last 90 days; 419 as pilot in command
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 864 hours
  • Last inspection: inspection type not recorded, November 10, 1982
  • Maximum gross weight: 2,175 lb
  • Seats: 4
  • Landing gear: fixed
  • Engine: Lycoming O-360-A3A (piston); 0 hours total

The flight

  • Departed from: 8S2 Cashmere WA at 9:00 pm
  • Destination: WA68 Vantage WA
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 320° at 14 knots
  • Visibility: 20 statute miles
  • Sky: scat at 5,000 ft
  • Temperature: 57°F (14°C), dew point 34°F (1°C)
  • Altimeter: 29.00 inHg
  • Observation at 9:55 pm from EAT, 20 miles away

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.