ASN Wikibase Occurrence # 295059
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| Date: | Wednesday 22 October 2003 |
| Time: | 14:15 LT |
| Type: |  American AA-1 |
| Owner/operator: | Private |
| Registration: | N5968L |
| MSN: | 268 |
| Total airframe hrs: | 3343 hours |
| Engine model: | Lycoming O-235-C2C |
| Fatalities: | Fatalities: 0 / Occupants: 2 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | San Martin, California -
 United States of America
|
| Phase: | Unknown |
| Nature: | Private |
| Departure airport: | San Martin, CA (KQ99) |
| Willows-Glenn County Airport, CA (WLW/KWLW) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The student pilot/airplane owner, who is also an aviation mechanic, reported a loss of engine power after takeoff during the initial climb. He said the engine was running rough, and started to lose power. He was unable to maintain altitude, and made a forced landing. The airplane collided with a fence during the landing roll. An examination of the engine disclosed virtually no compression in two of the four cylinders, an absence of an air cleaner, excessively wide gaps on all of bottom spark plugs, and a heavily sooted and fouled number 4 top spark plug. The engine was installed in July, 1978, and had accumulated 2157.5 total operating hours; it has never been overhauled.
Probable Cause: The absence of compression in two of the airplane's four cylinders, and the pilot/mechanic's failure to maintain the engine in an airworthy condition, which resulted in a loss of engine power during takeoff-initial climb, and subsequent forced landing.
Accident investigation:
 |
|
Sources:
NTSB LAX04LA022
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 12-Oct-2022 17:32 | ASN Update Bot | Added |
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