ASN Wikibase Occurrence # 293846
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| Date: | Saturday 30 April 2005 |
| Time: | 09:30 LT |
| Type: |  Grumman G-164A |
| Owner/operator: | Twin Cities Aviation, LLC |
| Registration: | N5304 |
| MSN: | 593 |
| Year of manufacture: | 1969 |
| Total airframe hrs: | 10020 hours |
| Engine model: | Pratt & Whitney R-1340 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Yuba City, California -
 United States of America
|
| Phase: | Unknown |
| Nature: | Agricultural |
| Departure airport: | Yuba City, CA |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
During the takeoff initial climb, the pilot heard a loud bang followed by a partial loss of engine power, and made an emergency landing on a dry rice field. The airplane landed hard, sheared off the landing gear, and tumbled before coming to rest on its belly. The post accident engine inspection revealed that the number 7 cylinder was cracked along the cylinder fins and around the top and bottom spark plug holes. The cylinder was removed revealing a crack along the inside portion of the combustion chamber of the cylinder head from spark plug hole to spark plug hole in-between the intake and exhaust valves. The engine logbooks entries did not show removal of the number 7 cylinder at any time between the last overhaul in 1999 and the date of the accident. The last inspection took place 5 months prior to the accident. The reasons for the cracks were not determined.
Probable Cause: a partial loss of engine power due to multiple cracks in the number 7 cylinder. The reasons for the cracks were not determined
Accident investigation:
 |
|
Sources:
NTSB LAX05LA152
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Oct-2022 14:14 | ASN Update Bot | Added |
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