Ayres S2R-600 accident near Caldwell, Idaho, August 24, 1986
On August 24, 1986 at about 4:00 pm local time, a Ayres S2R-600, registered N4077X, was substantially damaged in an accident near Caldwell, Idaho. 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 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
- August 24, 1986 · about 4:00 pm local time
- Place
- Caldwell, Idaho · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Ayres S2R-600
- Registration
- N4077X · registry record · serial 1916R
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
DURING AN AERIAL APPLICATION FLIGHT, THE PLT ENTERED A RIGHT TURN DURING A 'BORDER PASS.' WHILE IN THE RIGHT TURN, THE RIGHT WING STRUCK THE GROUND AND THE AIRCRAFT CARTWHEELED & CRASHED.
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: 8,200 hours in all; 2,000 in this make and model; 455 in the last 90 days
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 3,200 hours
- Last inspection: annual inspection, June 1, 1986
- Maximum gross weight: 6,000 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-1340-AN2 (piston); 0 hours total
The flight
- Departed from: U35 Caldwell ID
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 60 statute miles
- Sky: broken clouds; clear
- Temperature: 70°F (21°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.
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.