Grumman G-164A accident near Mahnomen, Minnesota, June 26, 1984
On June 26, 1984 at about 2:06 am local time, a Grumman G-164A, registered N6584, was substantially damaged in an accident near Mahnomen, Minnesota. 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
- June 26, 1984 · about 2:06 am local time
- Place
- Mahnomen, Minnesota · 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
- N6584 · no longer on the register · serial 723
- Damage
- Substantial damage
- Flight
- Aerial application (crop spraying) flight · agricultural flying rules (Part 137)
The NTSB's narrative final · quoted from the NTSB record
SHORTLY AFTER TAKING OFF, THE ENG LOST POWER. THE PLT STATED THAT THE ENG STOPPED COMPLETELY 'LIKE FUEL STARVATION.' HE DUMPED HIS LOAD OF CHEMICALS & MADE AN EMERGENCY LANDING.DURING THE LANDING, THE ACFT HIT A DITCH & NOSED OVER. AN INVESTIGATION REVEALED NO DISCREPANCIES EXCEPT THAT THE SPARK PLUGS CONTAINED A SOOTY DEPOSIT.
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
- Flight time: 2,782 hours in all; 763 in this make and model
- Medical certificate: Class 1 (valid medical--no waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 2,762 hours
- Last inspection: 100-hour inspection, May 23, 1984
- Maximum gross weight: 4,500 lb
- Seats: 1
- Landing gear: fixed
- Engine: P&W R-1340 (piston); 0 hours total
The flight
- Departed from: 6MN5 Mahnomen MN
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 080° at 10 knots
- Visibility: 15 statute miles
- Sky: broken clouds at 25,000 ft; scat at 9,000 ft
- Temperature: 81°F (27°C), dew point 63°F (17°C)
- Altimeter: 29.00 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.
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.