Piper PA-28-140 accident near Mount Vernon, Missouri, August 4, 1984
On August 4, 1984 at about 1:15 pm local time, a Piper PA-28-140, registered N57321, was substantially damaged in an accident near Mount Vernon, Missouri (Mount Vernon airport). It was a personal flight under general aviation rules (Part 91). 1 person had minor injuries; 3 others were unhurt. 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
- August 4, 1984 · about 1:15 pm local time
- Place
- Mount Vernon, Missouri · Mount Vernon · map
- Type
- Accident
- Injuries
- 1 person had minor injuries; 3 others were unhurt.
- Weather
- visual conditions (good weather)
- Aircraft
- Piper PA-28-140 · all PA-28-140s on the register
- Registration
- N57321 · no longer on the register · serial 287425091
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT ROLLED FOWARD AND COLLIDED WITH A METAL HANGER AFTER THE PLT HAND PROPPED THE ACFT TO START IT. THE ACFT WAS TIED AT THE TAIL AND CHOCKED WITH THE PLTS OLDEST DAUGHTER ON THE FOOT BRAKES. IN SPITE OF THESE PRECAUTIONS THE ACFT GOT AWAY AND HIT THE BLDG.
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: 550 hours in all; 1 in this make and model; 1 in the last 90 days
- Medical certificate: Class 2 (valid medical--no waivers/lim.)
- Seat: unk
The aircraft
- Airframe total time: 5,121 hours
- Last inspection: 100-hour inspection, August 2, 1984; 0 hours since
- Maximum gross weight: 2,050 lb
- Seats: 4
- Landing gear: fixed
- Engine: Lycoming O-320-E3D (piston); 0 hours total
The flight
- Departed from: M020 Mt. Vernon MO at 1:15 pm
- Flight plan: none
- Runway 0
Weather at the time
- Light: daylight
- Visibility: 20 statute miles
- Sky: clear
- Temperature: 81°F (27°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 | |||
| Passengers | 3 |
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.