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).
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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 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- June 14, 1984 · about 10:55 pm local time
- 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 |
Other NTSB records under N6798Q the same tail number, which may have belonged to a different aircraft at the time
About this page
Everything above comes from the NTSB's public accident database: the narrative, probable cause and findings are the NTSB's own words, and the coded tables behind its report (pilot, aircraft, flight, weather, injuries, sequence of events) are written out in plain English. Pilots' ages, home towns and medical details are left out on purpose. The docket at the NTSB holds the report as a PDF and the investigation's photographs and documents. This site never names pilots, passengers or anyone else involved. A preliminary report describes what is known soon after the event and can change; the final report, with the probable cause, usually follows one to two years later and this page is refreshed when it does. Case number SEA84LA133.