Cessna A188B accident near Boise, Idaho, June 27, 1986
On June 27, 1986 at about 2:40 pm local time, a Cessna A188B, registered N9779G, was destroyed in an accident near Boise, Idaho. It was an other work-use flight under general aviation rules (Part 91). 1 person was killed. 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 27, 1986 · about 2:40 pm local time
- Place
- Boise, Idaho · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna A188B · all A188Bs on the register
- Registration
- N9779G · no longer on the register · serial 18801604T
- Damage
- Destroyed
- Flight
- Other work-use flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PURPOSE OF THE FLIGHT WAS TO SPRAY THIRTY GALLONS OF RINSE WATER TO CLEAR THE SPRAY TANKS OF CHEMICAL. WHILE MANEUVERING THE ACFT STRUCK POWER LINES AND THEN STRUCK THE GROUND. THE ACFT SLID FOR ABOUT 20 FEET AND THEN NOSED OVER INVERTED.
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: 9,600 hours in all; 1,500 in this make and model; 48 in the last 90 days
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 4,024 hours
- Last inspection: 100-hour inspection, April 25, 1986; 48 hours since
- Maximum gross weight: 4,200 lb
- Seats: 1
- Landing gear: fixed
- Engine: Continental IO-520-D (piston); 0 hours total
The flight
- Departed from: Boise ID at 2:25 pm
- Destination: Caldwell ID
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 50 statute miles
- Sky: clear
- Temperature: 64°F (18°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.