ASN Wikibase Occurrence # 299203
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| Date: | Friday 24 March 2000 |
| Time: | 16:15 LT |
| Type: |  Cessna 172N |
| Owner/operator: | Airman Flight School Inc. |
| Registration: | N75958 |
| MSN: | 17268069 |
| Year of manufacture: | 1976 |
| Total airframe hrs: | 7011 hours |
| Engine model: | Lycoming O-320-H2AD |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | MAUD, Oklahoma -
 United States of America
|
| Phase: | Unknown |
| Nature: | Training |
| Departure airport: | NORMAN , OK (KOUN) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The flight instructor and private pilot receiving instruction were practicing basic maneuvers, during an instrument training flight, when the airplane began to 'vibrate violently.' They retarded the throttle, checked the magnetos, and then performed a precautionary landing to an open field. During the landing roll, the right horizontal stabilizer impacted a fence. An FAA inspector reported that the #3 exhaust rocker arm retaining stud separated. A section of stud was found lodged beneath the intake rocker arm, and the remaining portion of the stud remained seated in the cylinder head assembly. Metallurgical examination revealed that the stud failed due to fatigue that originated at the thread root from multiple origins.
Probable Cause: the loss of engine power while maneuvering as a result of the separation of the exhaust rocker arm retaining stud due to fatigue, which resulted in a precautionary landing.
Accident investigation:
 |
|
Sources:
NTSB FTW00LA107
History of this aircraft
Other occurrences involving this aircraft
| 17 June 1983 | N75958 | Robert Elliott | 0 | Ellicott, CO | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 16-Oct-2022 03:47 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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