Amateur-built COUGAR-1 accident near St. Cloud, Minnesota, October 11, 1984
On October 11, 1984 at about 10:55 pm local time, a amateur-built COUGAR-1, registered N3227X, was destroyed in an accident near St. Cloud, Minnesota (St Cloud airport). It was a personal flight under general aviation rules (Part 91). 1 person was killed. 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
- October 11, 1984 · about 10:55 pm local time
- Place
- St. Cloud, Minnesota · St Cloud · map
- Type
- Accident
- Injuries
- 1 person was killed.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built COUGAR-1
- Registration
- N3227X · registry record · serial 1
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE HOMEBUILT ACFT CRASHED WHILE ATTEMPTING AN EMERGENCY LNDG IN A FARMERS FIELD. THE FINAL TURN TO LAND WAS STEEPENED TO AVOID A HOUSE. THE ACFT FLIPPED OVER AND CONTACTED THE GROUND IN AN INVERTED, LEFT WING & NOSE DWN ATTITUDE WHICH RESULTED IN A 180 DEGREE REVERSAL BEFORE FINAL IMPACT. THE PLT/OWNER/BUILDER HAD BEEN IN THE PROCESS OF COMPLETING THE ACFT FOR 20 YRS. HE HAD COME TO THE ARPT ON THE ACC DAY TO WORK ON THE ACFT AGAIN BUT INSTEAD DECIDED TO TRY A MAIDEN FLT. THE FLT LASTED 40 MINUTES. WITNESSES NOTICED THE ACFT FLYING ERRATICALLY AND LOSING ALT AS IT FLEW WEST ALONG THE HIWAY RETURNING TOWARD THE ARPT OF DEPARTURE. IT CRASHED INTO A CORNFIELD ABOUT 3 MILES FROM THE ARPT. INVESTIGATION OF THE ACFT WRECKAGE SHOWED SEVERAL IRREGULARITIES IN CONSTRUCTION METHODS & ASSEMBLY STANDARDS. MAINTENANCE PERFORMED WAS ALSO SUBSTANDARD. NO PROBLEMS OF APHYSICAL NATURE FOR THE 61 YR OLD PLT WERE DISCOVERED DURING AUTOPSY.
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: private
- Ratings: single-engine land
- Flight time: 140 hours in all; 1 in this make and model; 93 as pilot in command
- Medical certificate: Class 3 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 2 hours
- Last inspection: inspection type not recorded, August 31, 1984; 2 hours since
- Maximum gross weight: 1,669 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-290-GPU (piston); 0 hours total
The flight
- Departed from: STC St. Cloud MN at 11:30 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Wind: from 150° at 11 knots
- Visibility: 7 statute miles
- Sky: overcast at 25,000 ft; scat at 1,500 ft
- Temperature: 66°F (19°C), dew point 59°F (15°C)
- Altimeter: 30.00 inHg
- Observation at 11:54 pm from STC, 5 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.
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.