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Accidents · NTSB SEA89LA052 · Final report

Schweizer 269C accident near Forrest Grove, Oregon, March 3, 1989

On March 3, 1989 at about 10:30 pm local time, a Schweizer 269C (helicopter), registered N7505Y, was substantially damaged in an accident near Forrest Grove, Oregon. It was an other work-use flight under external-load helicopter rules (Part 133). 1 person had minor injuries. The weather was visual conditions (good weather).

The NTSB's probable cause their words, unchanged

THE PILOT'S MISJUDGMENT OF HIS ALTITUDE AND CLEARANCE WHILE ATTEMPTING TO SLING-LOAD A TRAILER.

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

What the record shows

Date
March 3, 1989 · about 10:30 pm local time
Place
Forrest Grove, Oregon · map
Type
Accident
Injuries
1 person had minor injuries.
Weather
visual conditions (good weather)
Aircraft
Schweizer 269C · all 269Cs on the register
Registration
N7505Y · no longer on the register · serial S3100
Damage
Substantial damage
Flight
Other work-use flight · external-load helicopter rules (Part 133)

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

WHILE ATTEMPTING TO SLING LOAD HOLLY TREES ONTO A SEMI-TRAILER, THE PILOT MISJUDGED HIS ALTITUDE AND CAUGHT THE SKID OF HIS HELICOPTER ON THE SIDE ON THE TRAILER. THE HELICOPTER ROLLED OVER ONTO ITS SIDE.

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; rotorcraft: helicopter
  • Flight time: 4,446 hours in all; 1,200 in this make and model; 54 in the last 90 days; 30 in the last 30 days
  • Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
  • Seat: left

The aircraft

  • Airframe total time: 221 hours
  • Last inspection: annual inspection, January 8, 1988; 59 hours since
  • Maximum gross weight: 2,150 lb
  • Seats: 2
  • Landing gear: fixed
  • Engine: Lycoming HIO-360-D1A (piston); 0 hours total

The flight

  • Departed from: HIO Hillsboro OR at 9:15 pm
  • Destination: Forrest Grove OR
  • Flight plan: none
  • Runway 0

Weather at the time

  • Light: daylight
  • Wind: from 220° at 3 knots, gusting 8
  • Visibility: 20 statute miles
  • Sky: broken clouds at 2,000 ft; not recorded
  • Temperature: 39°F (4°C), dew point 0°F (-18°C)

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 N7505Y the same tail number, which may have belonged to a different aircraft at the time

2012-05-24ERA12LA362 · accident near Asheville, NC · substantial damage · no 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.