Ayres S2R-1820 accident near Pasco, Washington, June 12, 1984
On June 12, 1984 at about 9:00 pm local time, a Ayres S2R-1820, registered N4025K, was substantially damaged in an accident near Pasco, Washington. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). No one was hurt; 2 people were 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
- June 12, 1984 · about 9:00 pm local time
- Place
- Pasco, Washington · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Ayres S2R-1820
- Registration
- N4025K · no longer on the register · serial R1820-013DC
- 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 PLT WAS APPLYING HERBICIDES TO A CORN FIELD WHEN A POWER LOSS TO IDLE RPM OCCURRED. DURING AN EMERGENCY LANDING, THE MAIN GEAR SUNK INTO SOFT SAND & THE ACFT NOSED OVER. AN EXAM REVEALED THAT THE THROTTLE BRACKET, P/N 19703-5001, HAD FAILED.
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; instrument: airplane
- Flight time: 8,331 hours in all; 68 in this make and model; 148 in the last 90 days; 8,331 as pilot in command
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 476 hours
- Last inspection: 100-hour inspection, October 18, 1983; 90 hours since
- Maximum gross weight: 6,000 lb
- Seats: 2
- Landing gear: fixed
- Engine: Wright R-1820 (piston); 0 hours total
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 200° at 5 knots
- Visibility: 30 statute miles
- Sky: clear
- Temperature: 79°F (26°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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 N4025K 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.