Grumman-Schweizer G-164B accident near Westley, California, August 19, 1990
On August 19, 1990 at about 1:10 pm local time, a Grumman-Schweizer G-164B, registered N6774Q, was destroyed in an accident near Westley, California. It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). 1 person was seriously injured. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
THE PILOT'S FAILURE MAINTAIN OBSTACLE CLEARANCE.
Source: NTSB aviation accident database, copy made November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- August 19, 1990 · about 1:10 pm local time · cases in 1990
- Place
- Westley, California · map
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman-Schweizer G-164B
- Registration
- N6774Q · registry record · serial 284B
- Damage
- Destroyed
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
THE PILOT OF AN AGRICULTURE AIRCRAFT COLLIDED WITH AN EIGHT FOOT HIGH CHAIN LINK FENCE SHORTLY AFTER TAKEOFF FROM AN AIRSTRIP TO BEGIN AN AERIAL APPLICATION. THE AIRCRAFT HIT THE GROUND, FLIPPED AND CAUGHT FIRE. THERE WAS NO EVIDENCE OF A MECHANICAL MALFUNCTION NOR DID THE PILOT REPORT ANY.
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; instructor: instrument airplane; instrument: airplane
- Flight time: 1,796 hours in all; 1,400 in this make and model; 282 in the last 90 days; 119 in the last 30 days; 1,614 as pilot in command; 14 on instruments
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 3,540 hours
- Last inspection: annual inspection, February 17, 1990; 200 hours since
- Maximum gross weight: 4,500 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-985-AN14B (piston); 0 hours total
- Fire on the ground
The flight
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- 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 N6774Q 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
- N6774Q on the register today · the tail number may have moved to another aircraft since
- Engine: P&W R-985-AN14B 77 aircraft carry this series today · as the NTSB recorded it
- Accidents and incidents in California 9,080 since 1982 · 1,094 in the last ten years
- California 28,286 aircraft registered
- Other NTSB records under N6774Q 3 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/LAX90DVA10.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.