Grumman G-164A accident near Bastrop, Louisiana, July 25, 1986
On July 25, 1986 at about 1:30 pm local time, a Grumman G-164A, registered N6718Q, was destroyed in an accident near Bastrop, Louisiana. 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
- July 25, 1986 · about 1:30 pm local time
- Place
- Bastrop, Louisiana · 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
- N6718Q · no longer on the register · serial 1712
- Damage
- Destroyed
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT CAME TO REST INVERTED WITH THE ENGINE UNDER WATER AFTER A POWER LOSS AND FORCED LANDING. THE PLT STATED THAT HE STARTED LOSING POWER IN THE TURN TO LINE UP FOR HIS FIRST AERIAL APPLICATION RUN. THE ACFT SETTLED TO GROUND IMPACT IN A LANDING ATTITUDE DESPITE FULL THROTTLE AND JETTISON OF LOAD. THE LEFT LANDING GEAR BROKE OFF ON AN EMBANKMENT AND THE ACFT NOSED OVER INTO A WATER FILLED DITCH. SINCE THE ENGINE WAS SUBMERGED FOR SEVERAL DAYS NO ENGINE TEARDOWN WAS ACCOMPLISHED. NO MALFUNCTIONS WERE FOUND DURING THE ON-SITE INVESTIGATION. THERE WERE NO WITNESSES TO THE ACCIDENT.
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: 4,275 hours in all; 2,325 in this make and model; 237 in the last 90 days; 80 in the last 30 days; 3,994 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 3,232 hours
- Last inspection: annual inspection, May 1, 1986
- Maximum gross weight: 4,500 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-1340-AN1 (piston); 0 hours total
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 10 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.
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.