Grumman G-164A accident near Burley, Idaho, July 8, 1995
On July 8, 1995 at about 2:30 pm local time, a Grumman G-164A, registered N8946H, was substantially damaged in an accident near Burley, 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
A TOTAL LOSS OF ENGINE POWER DUE TO FATIGUE FAILURE OF THE CRANKSHAFT. A FACTOR IN THE ACCIDENT WAS THE LACK OF SUITABLE TERRAIN FOR THE FORCED LANDING.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 8, 1995 · about 2:30 pm local time
- Place
- Burley, Idaho · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G-164A · all G-164As on the register
- Registration
- N8946H · no longer on the register · serial 1583
- 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 PILOT STATED THAT WHILE CONDUCTING AN AERIAL APPLICATION RUN, THE ENGINE EXPERIENCED A SUDDEN STOPPAGE. DURING THE FORCED LANDING ROLL, THE AIRCRAFT COLLIDED WITH A PILE OF ROCKS AND NOSED OVER. THE ENGINE WAS DISASSEMBLED, AND THE THE REAR THROW OF THE CRANKSHAFT WAS FOUND TO HAVE FAILED DUE TO FATIGUE.
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
- Flight time: 6,200 hours in all; 4,000 in this make and model; 125 in the last 90 days; 100 in the last 30 days; 6,000 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: frt
The aircraft
- Last inspection: annual inspection
- Maximum gross weight: 4,500 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-1340 (piston); 0 hours total
The flight
- Departed from: BYI ID
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 30 statute miles
- Sky: clear
- Temperature: 61°F (16°C), dew point 54°F (12°C)
- Altimeter: 30.00 inHg
- Observation at 1:46 pm from BYI
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.