ASN Wikibase Occurrence # 353424
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| Date: | Saturday 20 March 1999 |
| Time: | 15:30 LT |
| Type: | M-Squared Sprint 1000 |
| Owner/operator: | Private |
| Registration: | UNREG |
| MSN: | |
| Total airframe hrs: | 20 hours |
| Engine model: | Rotax 582 |
| Fatalities: | Fatalities: 1 / Occupants: 2 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Lakewood, NJ -
 United States of America
|
| Phase: | En route |
| Nature: | Unknown |
| Departure airport: | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The unregistered homebuilt airplane experienced an engine failure, then began a left turn, which evolved into a cartwheel prior to impact. The engine's normal exhaust gas temperature range was 930 degrees to 1,150 degrees Fahrenheit, while the maximum temperature was 1,200 degrees Fahrenheit. The passenger remembered seeing a digital readout, as it passed through the number 1,168. Engine teardown revealed scuffing on the magneto piston, in the vicinity of the exhaust port, on the upper half of the piston skirt. Within the scuffing, carbon deposits were observed. Scuffing and carbon fill were also found at the 4 o'clock and 7 o'clock positions, relative to the exhaust port, also on the upper half of the piston skirt. The piston rings and cylinder walls exhibited scuffing as well, which positionally corresponded to the scuffing on the cylinder skirt.
Probable Cause: The pilot's loss of control, which resulted in an unintentional stall/spin after an engine failure. A factor in the accident was the engine failure, which occurred when the magneto piston seized within the cylinder sleeve during an overtemp event.
Accident investigation:
 |
|
Sources:
NTSB NYC99FA078
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 09-Mar-2024 13:53 | ASN Update Bot | Added |
| 09-Mar-2024 17:39 | harro | Updated [Aircraft type, Total fatalities, Other fatalities, Departure airport, Narrative] |
Corrections or additions? ... Edit this accident description
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