Amateur-built SPIEZO SPORT accident near Mt. Vernon, Missouri, August 21, 1983
On August 21, 1983 at about 8:00 pm local time, a amateur-built SPIEZO SPORT, registered N24840, was substantially damaged in an accident near Mt. Vernon, Missouri (Mt. Vernon Municipal airport). It was a personal flight under general aviation rules (Part 91). No one was hurt; 1 person was on board or involved. 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
- August 21, 1983 · about 8:00 pm local time
- Place
- Mt. Vernon, Missouri · Mt. Vernon Municipal · map
- Type
- Accident
- Injuries
- No one was hurt; 1 person was on board or involved.
- Weather
- visual conditions (good weather)
- Aircraft
- Amateur-built SPIEZO SPORT SPIEZO SPO
- Registration
- N24840 · registry record · serial 137
- Damage
- Substantial damage
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE ACFT COLLIDED WITH THE RWY DURING TAKEOFF. THE WIND WAS GUSTY AND THE TEMPERATURE WAS HIGH AT 100 DEGREES F. THE ARPT ELEVATION IS 1240 FT MSL. THE PILOT STATED THAT AFTER TAKEOFF HE WAS CLIMBING AT ABOUT 200 FT AGL WHEN A GUST OF WIND DROPPED THE RIGHT WING. THE PILOT MADE A CORRECTION TO THE LEFT IN A DESCENDING LEFT TURN. THE ENGINE WAS RUNNING AT FULL POWER WHEN THE ACFT CONTACTED THE RWY.
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
What happened, in order
- LOSS OF CONTROL - IN FLIGHT during takeoff - initial climb
- IN FLIGHT COLLISION WITH TERRAIN/WATER during descent - uncontrolled
Pilot
- Ratings: multi-engine land, single-engine land, AME, ASE, APLN
- Flight time: 13,715 hours in all; 15 in this make and model; 57 in the last 90 days; 12,125 as pilot in command
- Medical certificate: class 2
The aircraft
- Airframe total time: 150 hours
- Last inspection: type not recorded, June 1, 1983
- Maximum gross weight: 900 lb
- Seats: 2
- Landing gear: fixed
- Engine: Lycoming O-290 (piston); 0 hours total
- Operating certificate: in the vicinity
The flight
- Flight plan: none
- Runway 17, 3,200 ft by 60 ft
Weather at the time
- Light: daylight
- Wind: from 190° at 15 knots
- Visibility: 10 statute miles
- Sky: clear
- Temperature: 100°C, dew point 0°C
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 1 |
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 MKC83LA194.