Grumman G-164B-450 accident near Pullman, Washington, June 14, 1984
On June 14, 1984 at about 10:55 pm local time, a Grumman G-164B-450, registered N6798Q, was destroyed in an accident near Pullman, Washington (None airport). It was an aerial application (crop spraying) flight under agricultural flying rules (Part 137). 1 person had minor injuries. 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 November 2, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 14, 1984 · about 10:55 pm local time · cases in 1984
- Place
- Pullman, Washington · None · map
- Type
- Accident
- Injuries
- 1 person had minor injuries.
- Weather
- visual conditions (good weather)
- Aircraft
- Grumman G-164B-450 · all G-164B-450s on the register
- Registration
- N6798Q · registry record · serial 310-B
- Damage
- Destroyed
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
AFTER MAKING A SWATH RUN, THE ACFT ENTERED A STEEP TURN WITH AN AIRSPEED OF ABOUT 75 MPH. ACCORDING TO TWO WITNESSES, THE ENG LOST POWER & THEN THE ACFT CRASHED. THE PLT WAS UNABLE TO REMEMBER WHAT HAD HAPPENED FROM THE TIME HE ENTERED THE TURN UNTIL HE WALKED AWAY FROM THE CRASH. AN EXAM OF THE ACCIDENT SITE REVEALED THAT THE ACFT HAD IMPACTED NEAR THE RIDGE OF UPWARD SLOPING TERRAIN, LEFT WING 1ST, THEN CARTWHEELED. AN INSPECTION OF THE ENG WAS PERFORMED, BUT NO REASON FOR THE POWER LOSS WAS FOUND.
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; single-engine sea
- Flight time: 21,000 hours in all; 2,800 in this make and model; 400 in the last 90 days; 21,000 as pilot in command
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 3,350 hours
- Last inspection: 100-hour inspection, February 4, 1984
- Maximum gross weight: 3,255 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-1340-AN1 (piston); 0 hours total
- Fire on the ground
The flight
- Departed from: NONE Pullman WA
- Destination: NONE
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 30 statute miles
- Sky: scat at 3,000 ft
- Temperature: 75°F (24°C), dew point 64°F (18°C)
- Altimeter: 30.00 inHg
- Observation at 10:42 pm from PUW, 6 miles away
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 N6798Q 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
- N6798Q 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 R-1340-AN1 64 aircraft carry this series today · as the NTSB recorded it
- Accidents and incidents in Washington 2,713 since 1982 · 361 in the last ten years
- Washington 10,663 aircraft registered
- Other NTSB records under N6798Q 1 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/SEA84LA133.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.