Schweizer G-164B accident near Wilson Creek, Washington, May 27, 1991
On May 27, 1991 at about 2:40 pm local time, a Schweizer G-164B, registered N8407K, was substantially damaged in an accident near Wilson Creek, Washington. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). 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 LOSS OF ENGINE POWER IN FLIGHT DUE TO IMPROPER OVERHAUL OF THE CARBURETOR FLOAT ASSEMBLY FULCRUM SCREW, SHUTTING OFF FUEL FLOW TO THE ENGINE.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 27, 1991 · about 2:40 pm local time
- Place
- Wilson Creek, Washington · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Schweizer G-164B
- Registration
- N8407K · no longer on the register · serial 689B
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT ENGINE QUIT DURING A LOW LEVEL AERIAL APPLICATION SWATH RUN. THE PILOT MADE AN EMERG FORCED LANDING AND THE ACFT IMPACTED IRRIGATION EQUIP ON LDG GND ROLL. POST ACCIDENT EXAM REVEALED CARB FAILURE & FUEL SHUTDOWN TO ENG.
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; single-engine sea; instrument: airplane; instrument: helicopter; rotorcraft: helicopter
- Flight time: 14,000 hours in all; 8,000 in this make and model; 120 in the last 90 days; 80 in the last 30 days; 13,900 as pilot in command
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Last inspection: annual inspection, February 5, 1991; 120 hours since
- Maximum gross weight: 7,020 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-1340-AN1 (piston); 0 hours total
The flight
- Departed from: WA70 Wilson Creek WA at 2:35 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 30 statute miles
- Sky: clear
- Temperature: 57°F (14°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
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 N8407K the same tail number, which may have belonged to a different aircraft at the time
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.