ASN Wikibase Occurrence # 298512
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| Date: | Monday 3 September 2001 |
| Time: | 12:15 LT |
| Type: |  Team Mini-Max 1500R |
| Owner/operator: | Private |
| Registration: | N962JA |
| MSN: | TA962 |
| Total airframe hrs: | 116 hours |
| Engine model: | Rotax 447 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Chesapeake, Virginia -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Saluda, VA |
| Norfolk-Hampton Roads Executive Airport, VA (KPVG) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot descended from 5,500 feet to 1,500 feet, at a moderate cruise power setting, at 5,500 rpm. About 1,500 feet above the ground, the two cycle 2-cylinder engine lost all power, and the pilot performed a forced landing to a field. The pilot believed that the descent at cruise power created a lean fuel/air mixture. Examination of the engine revealed scoring on both pistons, which was directly in line with the exhaust. According to a representative from the engine manufacturer, that type of failure was indicative of a heat seizure, normally associated with an excessive exhaust gas temperature, exceeding 1200 degrees F. The representative assumed that the engine was operating in a lean condition. According to the manufacturer's engine manual, during cruise and descents, it was very important that to avoid creating a lean mixture condition with high rpm and low throttle opening. Additionally, the manual warned that the engine was subject to sudden stoppage, and conformed to no aircraft standards.
Probable Cause: The pilot's failure to follow the engine manufacturer's descent procedure, which resulted in a lean mixture condition and subsequent engine seizure.
Accident investigation:
 |
|
Sources:
NTSB NYC01LA220
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 18:52 | ASN Update Bot | Added |
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