Grumman G-164B accident near Clewiston, Florida, April 15, 1991
On April 15, 1991 at about 2:30 pm local time, a Grumman G-164B, registered N8386K, was substantially damaged in an accident near Clewiston, Florida (Tribritton airport). 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
DISINTEGRATION OF THE IMPELLER FOR UNDETERMINED REASONS RESULTING IN THE TOTAL LOSS OF ENGINE POWER NECESSITATING THE FORCED LANDING.
Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- April 15, 1991 · about 2:30 pm local time · cases in 1991
- Place
- Clewiston, Florida · Tribritton · 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
- N8386K · registry record · serial 6788
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
WHILE MANEUVERING AT AN ALT OF 35 FT AGL, THE PLT STATED THAT THE ENG LOST ALL POWER. HE LANDED THE ACFT IN A FIELD & AFTER TOUCHDOWN, THE ACFT NOSED OVER & CAME TO REST INVERTED. EXAM OF THE ENG REVEALED THAT THE IMPELLER WAS DISINTEGRATED WITH PORTIONS LOCATED IN THE NO. 7 CYLINDER ASS'Y. NO DETERMINATION COULD BE MADE AS TO THE REASON FOR THE IMPELLER FAILURE. THE IMPELLER ASS'Y WAS OVERHAULED 912 HOURS EARLIER.
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: flight instructor, commercial pilot
- Ratings: single-engine land; instructor: airplane single-engine; instrument: airplane
- Flight time: 7,800 hours in all; 6,000 in this make and model; 200 in the last 90 days; 80 in the last 30 days; 7,800 as pilot in command; 1,000 on instruments
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 4,750 hours
- Last inspection: 100-hour inspection, February 19, 1991; 21 hours since
- Maximum gross weight: 6,075 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R1340-AN1 (piston); 0 hours total
- Operator: Airwork Enterprises of Fla,Inc
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 090° at 2 knots
- Visibility: 6 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 0°F (-18°C)
- Altimeter: 30.00 inHg
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 N8386K the same tail number, which may have belonged to a different aircraft at the time
Connections how this case links to the rest of the register
- N8386K on the register today · the tail number may have moved to another aircraft since
- Grumman G-164 119 registered today · the model family and its accident history
- Grumman 443 aircraft on the register
- Engine: P&W R1340-AN1 64 aircraft carry this series today · as the NTSB recorded it
- Accidents and incidents in Florida 6,111 since 1982 · 988 in the last ten years
- Florida 21,696 aircraft registered
- Other NTSB records under N8386K 2 records · the number may have belonged to another aircraft at the time
The whole map of how records connect · these connections as data: /graph/accident/MIA91LA122.json.
The bigger picture in Aviation Analytics: accidents over time since 1982, by model, by phase of flight and conditions, by place and on the map.
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 does not name anyone involved, its policy at this time. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.