ASN Wikibase Occurrence # 212644
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| Date: | Tuesday 26 June 2018 |
| Time: | 10:20 LT |
| Type: |  Cessna 172S Skyhawk |
| Owner/operator: | Westwind Aviation |
| Registration: | N154ME |
| MSN: | 172S8534 |
| Year of manufacture: | 2000 |
| Fatalities: | Fatalities: 0 / Occupants: 3 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Maricopa County, Phoenix Deer Valley, AZ -
 United States of America
|
| Phase: | Landing |
| Nature: | Executive |
| Departure airport: | Phoenix-Deer Valley Airport, AZ (DVT/KDVT) |
| Phoenix-Deer Valley Airport, AZ (DVT/KDVT) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While maneuvering during a local instructional flight, the engine began running rough, and the instructor decided to return to the airport. The engine subsequently lost total power and the propeller stopped rotating. The instructor performed a forced landing to a clearing where the airplane nosed over, resulting in substantial damage.
Examination of the engine revealed that the crankshaft was fractured at the No. 4 connecting rod journal. The fracture surface was flat and crack arrest lines were consistent with a fatigue fracture which initiated subsurface. No flaws or embedded particles were observed at the site of the fatigue initiation.
The engine was overhauled about 3 years before the accident and had accumulated 2,798 hours of operation since the overhaul.
Probable Cause: A total loss of engine power due to crankshaft failure as the result of a subsurface fatigue crack.
Accident investigation:
 |
|
Sources:
NTSB WPR18LA181
FAA register: http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=154ME
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 26-Jun-2018 21:15 | Geno | Added |
| 09-Jul-2022 06:12 | ASN Update Bot | Updated [Time, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative, Category, Accident report] |
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