Cessna 150M accident near Afton, Wyoming, June 10, 1984
On June 10, 1984 at about 4:30 pm local time, a Cessna 150M, registered N8564U, was substantially damaged in an accident near Afton, Wyoming (Afton Municipal airport). It was a business flight under general aviation rules (Part 91). No one was hurt; 2 people were 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 10, 1984 · about 4:30 pm local time
- Place
- Afton, Wyoming · Afton Municipal · map
- Type
- Accident
- Injuries
- No one was hurt; 2 people were on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Cessna 150M · all 150Ms on the register
- Registration
- N8564U · no longer on the register · serial 15077948
- Damage
- Substantial damage
- Flight
- Business flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE PLT DEPARTED RWY 16 WITH THE INTENTION OF REPOSITIONING THE ACFT ON THE ARPT AFTER LANDING. HE ESTIMATED THE SURFACEWINDS WERE FROM THE SOUTHEAST AT 15 KTS. A WITNESS STATED THAT THE WINDS HAD CHANGED DIRECTIONS ABOUT EIGHT TIMES DURING THE DAY. THE PLT STATED THAT AFTER CLIMBING TO ABOUT 400 FT, DOWNDRAFTS & VIOLENT TURBULENCE WERE ENCOUNTERED AND ALT COULD NOT BE MAINTAINED. THE ACFT SETTLED INTO A HAY FIELD WHERE IT NOSED OVER. AT THE TIME OF THE ACCIDENT, THE DENSITY ALT WAS ABOUT 6240 FT. THE ESTIMATED GROSS WEIGHT OF THE ACFT DURING TAKEOFF WAS 1537 LBS.
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: 6,000 hours in all; 300 in this make and model
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: left
The aircraft
- Airframe total time: 2,612 hours
- Last inspection: 100-hour inspection, February 5, 1984
- Maximum gross weight: 1,600 lb
- Seats: 2
- Landing gear: fixed
- Engine: Continental O-200-A (piston); 0 hours total
The flight
- Flight plan: none
- Runway 16, 4,200 ft by 45 ft
Weather at the time
- Light: daylight
- Wind: from 160° at 15 knots
- Visibility: 20 statute miles
- Sky: not recorded; not recorded
- Temperature: 45°F (7°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 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.