Grumman G-164B accident near Wilder, Idaho, July 19, 1994
On July 19, 1994 at about 2:20 pm local time, a Grumman G-164B, registered N48571, was substantially damaged in an accident near Wilder, 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 FAILURE OF THE LEFT BRAKE MASTER CYLINDER AND THE PILOT'S INADEQUATE REMEDIAL ACTION WHEN THE AIRCRAFT COLLIDED WITH AN EMBANKMENT DURING AN INTENTIONAL GROUND LOOP.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- July 19, 1994 · about 2:20 pm local time
- Place
- Wilder, Idaho · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G-164B · all G-164Bs on the register
- Registration
- N48571 · no longer on the register · serial 82B
- 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 ROLLOUT AFTER LANDING, THE PILOT DETERMINED THAT THE LEFT BRAKE HAD FAILED. HE ATTEMPTED AN INTENTIONAL GROUND LOOP TO AVOID A BANK BY A DITCH. THE LEFT LANDING GEAR COLLAPSED AND THE LEFT LOWER WING SUSTAINED IMPACT DAMAGE WHEN THE AIRCRAFT IMPACTED THE DIRT BANK. AFTER THE ACCIDENT, THE AIRCRAFT OWNER DETERMINED THAT THE LEFT BRAKE MASTER CYLINDER HAD FAILED DUE TO INTERNAL CORROSION.
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; instructor: airplane single-engine; instrument: airplane
- Flight time: 10,756 hours in all; 6,757 in this make and model
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: frt
The aircraft
- Last inspection: annual inspection, January 4, 1994; 742 hours since
- Maximum gross weight: 5,200 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-985 AN-14B (piston); 0 hours total
The flight
- Flight plan: none
- Runway 27, 2,500 ft by 20 ft
Weather at the time
- Light: daylight
- Wind: from 330° at 8 knots
- Visibility: 50 statute miles
- Sky: clear
- Temperature: 0°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.
Other NTSB records under N48571 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.