ASN Wikibase Occurrence # 297932
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| Date: | Monday 15 October 2018 |
| Time: | 21:10 LT |
| Type: |  Cessna 182P Skylane |
| Owner/operator: | |
| Registration: | N9398G |
| MSN: | 18260938 |
| Year of manufacture: | 1971 |
| Total airframe hrs: | 5338 hours |
| Engine model: | Continental O-470 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Opelika, Alabama -
 United States of America
|
| Phase: | Initial climb |
| Nature: | Private |
| Departure airport: | Auburn, AL (KAUO) |
| Athens Airport, GA (AHN/KAHN) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the climb after takeoff, the pilot noticed a drop in engine oil pressure and turned back toward the airport to land. Almost immediately thereafter, the engine began to run rough and eventually lost power completely. The pilot performed a forced landing to an interstate exit ramp, during which the airplane sustained substantial damage.
Examination of the engine revealed that the Nos. 2 and 4 connecting rods were separated from their respective rod journals. All rod journals were absent of lubrication and displayed heat damage. Disassembly of the engine and the separation of the case halves revealed abnormal wear and damage consistent with loss of lubrication. Examination and testing of engine accessories revealed no anomalies that would have prevented normal operation.
The engine was equipped with a screw-on oil filter adaptor required to be torqued to 65 ft/lbs at installation, and the integrity of the oil filter adaptor installation was required to be examined during every 100-hour and annual inspection. The adaptor on the accident engine was found loose and could be easily rotated by hand through a 90° arc, and oil seepage was found on the area surrounding the oil filter adapter attachment point. Given this information, it is likely that the loose adaptor allowed the engine oil to be pumped overboard, resulting in a loss of engine lubrication and catastrophic failure of the Nos. 2 and 4 connecting rods.
Probable Cause: The improper torque application and ongoing inspection of an oil filter adaptor by maintenance personnel, which resulted in a loss of lubrication and a catastrophic engine failure.
Accident investigation:
 |
|
Sources:
NTSB ERA19LA017
History of this aircraft
Other occurrences involving this aircraft
| 22 August 1982 | N9398G | Private | 0 | Batesville, GA | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2022 10:38 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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