ASN Wikibase Occurrence # 291255
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| Date: | Tuesday 2 August 2016 |
| Time: | 18:30 LT |
| Type: |  Cessna 172K |
| Owner/operator: | |
| Registration: | N46459 |
| MSN: | 17257282 |
| Year of manufacture: | 1969 |
| Total airframe hrs: | 4640 hours |
| Engine model: | Lycoming O-320 SERIES |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Neenah, Wisconsin -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Neenah, WI (79C) |
| Neenah, WI (79C) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The private pilot was conducting the first flight in the airplane after having removed a failed vacuum pump from the engine; the pilot was not a certified airframe and powerplant mechanic. During the flight, the engine lost power, and the pilot subsequently landed the airplane on a highway, and the left wing contacted a road sign, which resulted in substantial damage.
The pilot reported that he had recently had a mechanic remove a failed vacuum pump on a different airplane that he owned and that he was able to fly that airplane without the pump. As a result, he thought he could also fly the accident airplane without a vacuum pump. However, the vacuum pumps were mounted on each airplane differently, and the pilot's removal of the vacuum pump on the accident airplane allowed oil to exit the engine through the drive gear opening on the accessory case, which resulted in oil starvation.
Probable Cause: A loss of engine power due to oil starvation, which resulted from the pilot, who was not a certified airframe and powerplant mechanic, removing the vacuum pump from the engine, and his misconception that he could operate the airplane without the pump.
Accident investigation:
 |
|
Sources:
NTSB CEN16LA309
History of this aircraft
Other occurrences involving this aircraft
| 17 October 2002 | N46459 | Jerry Sherwood | 0 | Neenah, Wisconsin | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Oct-2022 11:37 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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