ASN Wikibase Occurrence # 354482
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| Date: | Wednesday 13 May 1998 |
| Time: | 15:15 LT |
| Type: |  Cessna A185F |
| Owner/operator: | Private |
| Registration: | N7140H |
| MSN: | 18503351 |
| Year of manufacture: | 1977 |
| Total airframe hrs: | 1891 hours |
| Engine model: | Lycoming TIO-540J2BD |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Isanti, MN -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Webster, MN (1MN8) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot of a single-engine amphibious float-equipped airplane said her propeller RPM began to flucuate during cruise flight. She said when she attempted to adjust the RPM '...the engine clunked a couple of times and lost all power.' The pilot made a forced landing on a grassy field. She said the airplane touched down on the main float wheels that '...dug into the soft ground... .' The nosewheels touched down and the airplane nosed over on its back according to the pilot. The airplane's pilot operating handbook states that a '...landing on land without engine power [should be made] with the landing gear UP on soft or rough ground... and DOWN on firm or smooth ground.' An examination of the engine revealed it had been installed on another airplane before being put onto the accident airplane. The crankshaft had completely failed at the forward radius of the number 3 main bearing journal. The number 3 main bearing had shifted forward. The engine had 1,056-hours since it had been factory remanufactured.
Probable Cause: the soft terrain condition. A factor was the failure of the crankshaft.
Accident investigation:
 |
|
Sources:
NTSB CHI98LA150
History of this aircraft
Other occurrences involving this aircraft
| 13 June 2004 | N185AV | Private | 0 | 10 miles south-southwest of Skwentna, Alaska | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 11-Mar-2024 14:53 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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