ASN Wikibase Occurrence # 291679
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| Date: | Saturday 28 October 2006 |
| Time: | 15:00 LT |
| Type: |  Van's RV-6 |
| Owner/operator: | |
| Registration: | N1198N |
| MSN: | 20540 |
| Total airframe hrs: | 1700 hours |
| Engine model: | Lycoming O-320 Series |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Turlock, California -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | Turlock, CA (O15) |
| (O15) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The airplane experienced a partial loss of engine power and collided with the ground during the pilot's attemp to return to the departure runway. After reaching about 500 feet above ground level (agl) in the takeoff initial climb, the pilot noted a loss of engine revolutions per minute (rpm) and a decrease in airspeed. He maneuvered the airplane in a 180-degree turn in an attempt to return to the runway. The airplane stalled and the pilot attempted to recover. The airplane entered an accelerated stall again and descended rapidly. Upon impact, the airplane touched down hard, subsequently nosing over and coming to rest inverted. The pilot performed a post-accident examination of the engine and discovered that both spark plugs in the no. 4 cylinder were oil fouled. Additional investigation found that two of the rings on the number four piston were broken, allowing oil to move past the piston into the combustion chamber.
Probable Cause: a partial loss of engine power due to the broken piston rings in the no. 4 cylinder. Also causal was the pilot's failure to maintain adequate airspeed while maneuvering for a forced landing, which resulted in a stall/mush.
Accident investigation:
 |
|
Sources:
NTSB LAX07LA022
History of this aircraft
Other occurrences involving this aircraft
| 4 February 2001 | N1198N | Private | 0 | Georgetown, CA | |
sub |
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 07-Oct-2022 17:39 | ASN Update Bot | Added |
Corrections or additions? ... Edit this accident description
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