Cassutt III M accident near Corona, California, May 7, 1993
On May 7, 1993 at about 10:44 pm local time, a Cassutt III M, an amateur-built aircraft,, registered N250P, was destroyed in an accident near Corona, California (Corona airport). It was a personal flight under general aviation rules (Part 91). 1 person was seriously injured. The weather was visual conditions (good weather).
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The NTSB's probable cause their words, unchanged
the pilot improper maintenance modification and total failure of the magneto.
Source: NTSB aviation accident database, copy made October 4, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- May 7, 1993 · about 10:44 pm local time
- Place
- Corona, California · Corona
- Type
- Accident
- Injuries
- 1 person was seriously injured.
- Weather
- visual conditions (good weather)
- Aircraft
- Cassutt III M, amateur-built · all III Ms on the register
- Registration
- N250P · registry record · serial 250P
- Damage
- Destroyed
- Flight
- Personal flight · general aviation rules (Part 91)
The NTSB's narrative final · quoted from the NTSB record
THE AIRPLANE EXPERIENCED A LOSS OF ENGINE POWER ON TAKEOFF. THE PILOT EXECUTED A 180 DEGREE TURN AND LANDED ADJACENT TO THE DEPARTURE RUNWAY. THE ENGINE EXAMINATION DISCLOSED ONE MAGNETO WAS INOPERABLE. THE ENGINE VALVE SPRINGS WERE FROM A DIFFERENT MODEL ENGINE.
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: multi-engine land; single-engine land; instrument: airplane; instrument: helicopter; rotorcraft: helicopter
- Flight time: 5,000 hours in all; 750 in this make and model; 7 in the last 90 days; 4 in the last 30 days
- Medical certificate: Class 2 (valid medical--w/ waivers/lim.)
- Seat: ctr
The aircraft
- Airframe total time: 353 hours
- Last inspection: annual inspection, November 15, 1993; 7 hours since
- Maximum gross weight: 900 lb
- Seats: 1
- Landing gear: fixed
- Engine: Continental C85-12F (piston); 0 hours total
The flight
- Flight plan: none
- Runway 21, 3,200 ft by 50 ft
Weather at the time
- Light: daylight
- Wind: from 210° at 7 knots
- Visibility: 25 statute miles
- Sky: clear
- Temperature: 70°F (21°C), dew point 0°F (-18°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 LAX93LA207.