ASN Wikibase Occurrence # 66497
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| Date: | Sunday 19 July 2009 |
| Time: | 11:00 |
| Type: |  Cessna 170B |
| Owner/operator: | Private |
| Registration: | N8339A |
| MSN: | 25191 |
| Total airframe hrs: | 3584 hours |
| Engine model: | Lycoming O-360-A1A |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Mahwah, New Jersey -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Westfield, MA (BAF) |
| Mahwah, NJ (TEB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During a cross-country flight, the airplane’s engine began to vibrate heavily, lost all power, and the pilot executed an emergency landing in a field. During the landing roll, the airplane impacted a hill, and sustained substantial damage. On a previous flight, the pilot recalled a vague vibration while en route. A mechanic was unable to identify the source of the vibration, and a "no defects noted" statement was entered into the logbook after various component checks. Examination of the airplane by a Federal Aviation Administration (FAA) inspector revealed that the No.1 cylinder revealed that two thru bolt nuts were loose. Two of the other bolts were sheered off, and one was missing. The threads on the thru bolt, with the missing nut, were rusted.
Probable Cause: A loss of engine power due to the failure of the No. 1 cylinder thru bolt hold down nuts due to corrosion.
Accident investigation:
 |
|
Sources:
NTSB
History of this aircraft
Other occurrences involving this aircraft
| 16 August 1994 | N8339A | Private | 0 | Redmond, OR | |
sub |
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 20-Jul-2009 10:41 | slowkid | Added |
| 21-Dec-2016 19:25 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 02-Dec-2017 15:48 | ASN Update Bot | Updated [Operator, Other fatalities, Departure airport, Destination airport, Source, Narrative] |
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