ASN Wikibase Occurrence # 288267
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| Date: | Thursday 29 July 2010 |
| Time: | 12:20 LT |
| Type: |  Cessna T188C |
| Owner/operator: | Swing Wings, Inc. |
| Registration: | N2085J |
| MSN: | T18803375T |
| Year of manufacture: | 1978 |
| Total airframe hrs: | 5862 hours |
| Engine model: | Continental TSIO-520-T |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Montezuma, Indiana -
 United States of America
|
| Phase: | En route |
| Nature: | Agricultural |
| Departure airport: | Clinton, IN (1I7) |
| Clinton, IN (1I7) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The pilot reported that, while en route to spray a field, the engine lost power and the windshield became obscured with oil. The pilot immediately turned into the wind and made a forced landing into a nearby cornfield. A postaccident examination revealed that the No. 2 connecting rod had separated from the engine crankshaft. Metallurgical examinations found polishing and wear patterns indicative of relative motion between the connecting rod components and an associated rod bolt head/nut. The nut threads were sheared as result of overload failure, consistent with impulse loading. The observed anomalies were consistent with an insufficient fastener preload on installation of the connecting rod bolt. The engine had accumulated 1,193 hours since its last major overhaul. It is likely that the rod bolt head/nut became loose during operation, which led to a failure of the assembly due to impulse loading.
Probable Cause: The total loss of engine power due to an insufficient fastener preload that led to the failure of the No. 2 connecting rod assembly.
Accident investigation:
 |
|
Sources:
NTSB CEN10LA450
History of this aircraft
Other occurrences involving this aircraft
| 12 June 2020 | N2085J | AgraTech Inc | 0 | McCurtain, OK | |
sub |
| Loss of control | ||||||
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 04-Oct-2022 20:39 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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